How to set children heights in GridView to the maximum height among children? - flutter

Question

I'd like to set the heights of the children of a GridView to the maximum height among all the children. I don't want to type a fixed value in childrenAspectRatio or in mainAxisExtent, I need the heights to adapt to the biggest child.
Code:
GridView.builder(
shrinkWrap: true,
gridDelegate: const SliverGridDelegateWithFixedCrossAxisCount(
crossAxisCount: 2,
mainAxisExtent: 256, // don't want to set this because could cause overflow or waste of blank space
),
itemCount: prizes.length,
itemBuilder: (context, index){
return Card(
elevation: 3.0,
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.circular(10.0)),
color: Colors.white,
child: Padding(
padding: const EdgeInsets.all(8.0),
child: Column(
children: [
Stack(
children: [
Image.asset(prizes[index]["image"]),
]
),
Padding(
padding: const EdgeInsets.only(top: 10.0),
child: Text(
prizes[index]["name"],
style: const TextStyle(fontWeight: FontWeight.bold, ),
),
),
Padding(
padding: const EdgeInsets.only(top: 8.0),
child: Row(
mainAxisAlignment: MainAxisAlignment.center,
children: [
Text(
prizes[index]["cost"].toString(),
style: const TextStyle(fontWeight: FontWeight.normal),
),
Padding(
padding: const EdgeInsets.only(left : 4.0),
child: SizedBox(
width: 14,
height: 14,
child: svg),
),
],
),
),
Padding(
padding: const EdgeInsets.only(top: 10),
child: ElevatedButton(
style: ButtonStyle(
backgroundColor: MaterialStateProperty.all(Colors.blue),
shape: MaterialStateProperty.all<RoundedRectangleBorder>(
RoundedRectangleBorder(
borderRadius: BorderRadius.circular(8.0),
)
)
),
onPressed: () async {
},
child: Padding(
padding: EdgeInsets.all(15.0),
child: Text(AppLocalizations.of(context)!.riscuoti,
style: TextStyle(
fontSize: 16
),
),
),
),
),
],
),
),
);
},
),