diff --git a/src/components/cost-estimator/cost-estimator-form.tsx b/src/components/cost-estimator/cost-estimator-form.tsx
index cc1036e..e6c9dd6 100644
--- a/src/components/cost-estimator/cost-estimator-form.tsx
+++ b/src/components/cost-estimator/cost-estimator-form.tsx
@@ -25,6 +25,11 @@ export type IllustrationSelection = {
 
 export type BrandingSelection = 'full-cycle' | 'brush-up' | 'logo-only' | 'none' | null;
 
+export type ShoppingCartSelection = {
+  hasCart: boolean | null;
+  multiplePurchases: boolean | null;
+}
+
 export type FormData = {
   projectType: 'website' | 'mobile-app' | 'platform' | null;
   serviceType: 'entire-project' | 'development' | 'ui-ux-design' | 'identity-branding' | null;
@@ -35,7 +40,7 @@ export type FormData = {
   illustrations: IllustrationSelection;
   branding: BrandingSelection;
   additionalFeatures: string[];
-  shoppingCart: boolean | null;
+  shoppingCart: ShoppingCartSelection;
 };
 
 export function CostEstimatorForm() {
@@ -55,7 +60,10 @@ export function CostEstimatorForm() {
     },
     branding: null,
     additionalFeatures: [],
-    shoppingCart: null,
+    shoppingCart: {
+      hasCart: null,
+      multiplePurchases: null,
+    },
   });
   const [isPending, startTransition] = useTransition();
 
@@ -91,7 +99,10 @@ export function CostEstimatorForm() {
         },
         branding: null,
         additionalFeatures: [],
-        shoppingCart: null,
+        shoppingCart: {
+          hasCart: null,
+          multiplePurchases: null
+        },
     });
     setCurrentStep(1);
   }
diff --git a/src/components/cost-estimator/step-10-shopping-cart.tsx b/src/components/cost-estimator/step-10-shopping-cart.tsx
index 401efee..656edfb 100644
--- a/src/components/cost-estimator/step-10-shopping-cart.tsx
+++ b/src/components/cost-estimator/step-10-shopping-cart.tsx
@@ -1,10 +1,11 @@
 
 "use client";
 
-import type { FormData } from './cost-estimator-form';
+import type { FormData, ShoppingCartSelection } from './cost-estimator-form';
 import { Button } from '@/components/ui/button';
 import { Gauge } from 'lucide-react';
 import React, { useState, useMemo } from 'react';
+import { AnimatePresence, motion } from 'framer-motion';
 
 type Step10Props = {
   onNext: () => void;
@@ -30,11 +31,14 @@ const featuresHoursMap: Record<string, number> = {
   'location-based': 40,
   'live-streaming': 55,
 };
-const shoppingCartHours = 45;
+const shoppingCartHoursMap = {
+    simple: 45,
+    multiple: 20
+};
 
 const calculateHours = (
     formData: FormData,
-    shoppingCart: boolean | null
+    shoppingCart: ShoppingCartSelection | null
 ): number => {
     const pageVal = formData.pageCount === 10 ? 50 : (formData.pageCount + 1) * 5 - 1;
     const pageHours = pageVal * 6;
@@ -58,43 +62,91 @@ const calculateHours = (
         return total + (featuresHoursMap[feature] || 0);
     }, 0);
 
-    const cartHours = shoppingCart ? shoppingCartHours : 0;
+    let cartHours = 0;
+    if (shoppingCart?.hasCart) {
+        cartHours += shoppingCartHoursMap.simple;
+        if (shoppingCart.multiplePurchases) {
+            cartHours += shoppingCartHoursMap.multiple;
+        }
+    }
 
     return pageHours + stageHours + designHours + animationHours + illustrationTotalHours + brandingH + additionalFeaturesHours + cartHours;
 };
 
 export function Step10ShoppingCart({ onNext, onBack, onUpdateData, formData }: Step10Props) {
-  const [selectedOption, setSelectedOption] = useState<boolean | null>(formData.shoppingCart);
+  const [selections, setSelections] = useState<ShoppingCartSelection>(formData.shoppingCart);
 
-  const handleSelect = (option: boolean) => {
-    setSelectedOption(option);
-    onUpdateData({ shoppingCart: option });
+  const handleSelect = (field: keyof ShoppingCartSelection, value: boolean) => {
+    const newSelections = { ...selections, [field]: value };
+    if (field === 'hasCart' && value === false) {
+      newSelections.multiplePurchases = null;
+    }
+    setSelections(newSelections);
+    onUpdateData({ shoppingCart: newSelections });
   };
 
   const estimatedHours = useMemo(() => {
-    return calculateHours(formData, selectedOption);
-  }, [selectedOption, formData]);
+    return calculateHours(formData, selections);
+  }, [selections, formData]);
+
+  const isNextDisabled = selections.hasCart === null || (selections.hasCart === true && selections.multiplePurchases === null);
 
   return (
-    <div className="flex flex-col items-start">
-      <h2 className="font-headline text-3xl font-bold tracking-tight text-center w-full">Do you need a shopping cart for buying multiple products with one check-out?</h2>
-      <div className="mt-8 grid w-full grid-cols-1 gap-4 md:grid-cols-2">
-        <Button
-            variant={selectedOption === true ? 'default' : 'outline'}
-            className="w-full justify-start p-6 text-lg"
-            onClick={() => handleSelect(true)}
-        >
-            Yes
-        </Button>
-        <Button
-            variant={selectedOption === false ? 'default' : 'outline'}
-            className="w-full justify-start p-6 text-lg"
-            onClick={() => handleSelect(false)}
-        >
-            No
-        </Button>
+    <div className="flex flex-col items-start space-y-8">
+      <div>
+        <h2 className="font-headline text-3xl font-bold tracking-tight text-center w-full">Do you need a shopping cart for buying multiple products with one check-out?</h2>
+        <div className="mt-8 grid w-full grid-cols-1 gap-4 md:grid-cols-2">
+            <Button
+                variant={selections.hasCart === true ? 'default' : 'outline'}
+                className="w-full justify-start p-6 text-lg"
+                onClick={() => handleSelect('hasCart', true)}
+            >
+                Yes
+            </Button>
+            <Button
+                variant={selections.hasCart === false ? 'default' : 'outline'}
+                className="w-full justify-start p-6 text-lg"
+                onClick={() => handleSelect('hasCart', false)}
+            >
+                No
+            </Button>
+        </div>
       </div>
-      <div className="mt-16 flex w-full items-center justify-between">
+      
+      <AnimatePresence>
+        {selections.hasCart && (
+             <motion.div
+                key="multiple-purchases"
+                initial={{ opacity: 0, height: 0 }}
+                animate={{ opacity: 1, height: 'auto' }}
+                exit={{ opacity: 0, height: 0 }}
+                transition={{ duration: 0.3 }}
+                className="w-full overflow-hidden"
+            >
+                <div>
+                    <h2 className="font-headline text-3xl font-bold tracking-tight text-center w-full">How about a shopping cart to make multiple purchases at once?</h2>
+                    <div className="mt-8 grid w-full grid-cols-1 gap-4 md:grid-cols-2">
+                        <Button
+                            variant={selections.multiplePurchases === true ? 'default' : 'outline'}
+                            className="w-full justify-start p-6 text-lg"
+                            onClick={() => handleSelect('multiplePurchases', true)}
+                        >
+                            Yes
+                        </Button>
+                        <Button
+                            variant={selections.multiplePurchases === false ? 'default' : 'outline'}
+                            className="w-full justify-start p-6 text-lg"
+                            onClick={() => handleSelect('multiplePurchases', false)}
+                        >
+                            No
+                        </Button>
+                    </div>
+                </div>
+           </motion.div>
+        )}
+      </AnimatePresence>
+
+      <div className="mt-8 flex w-full items-center justify-between">
         <div className="flex items-center gap-2">
             <Gauge className="h-6 w-6 text-primary" />
             <span className="font-headline text-lg font-bold">{estimatedHours}+ hours</span>
@@ -113,7 +165,7 @@ export function Step10ShoppingCart({ onNext, onBack, onUpdateData, formData }: S
               <div className="w-10 h-2 bg-primary rounded-full" />
               <div className="w-10 h-2 bg-primary rounded-full" />
             </div>
-            <Button onClick={onNext} disabled={selectedOption === null}>
+            <Button onClick={onNext} disabled={isNextDisabled}>
               Submit
             </Button>
         </div>
diff --git a/src/components/cost-estimator/step-11-results.tsx b/src/components/cost-estimator/step-11-results.tsx
index 15bfd67..03a63e1 100644
--- a/src/components/cost-estimator/step-11-results.tsx
+++ b/src/components/cost-estimator/step-11-results.tsx
@@ -1,3 +1,4 @@
+
 "use client";
 
 import type { FormData } from './cost-estimator-form';
@@ -29,7 +30,10 @@ const featuresHoursMap: Record<string, number> = {
   'location-based': 40,
   'live-streaming': 55,
 };
-const shoppingCartHours = 45;
+const shoppingCartHoursMap = {
+    simple: 45,
+    multiple: 20
+};
 
 
 export const calculateTotalHours = (formData: FormData): number => {
@@ -55,7 +59,13 @@ export const calculateTotalHours = (formData: FormData): number => {
         return total + (featuresHoursMap[feature] || 0);
     }, 0);
 
-    const cartHours = formData.shoppingCart ? shoppingCartHours : 0;
+    let cartHours = 0;
+    if (formData.shoppingCart?.hasCart) {
+        cartHours += shoppingCartHoursMap.simple;
+        if (formData.shoppingCart.multiplePurchases) {
+            cartHours += shoppingCartHoursMap.multiple;
+        }
+    }
 
     return pageHours + stageHours + designHours + animationHours + illustrationTotalHours + brandingH + additionalFeaturesHours + cartHours;
 };