How easy would it be to make a sack full of memory foam?

[Eeezee]

There's a store in the mall that sells what is essentially just a big bag of memory foam that you sit on like a bean bag chair. These things are quite comfy, but there's no way I'm paying $400 for an amorphous sack of foam.

The outer cover probably isn't a problem to make (sewing machine). Does anyone know how to acquire large quantities of memory foam, and how much might it cost?

 

[d33pt]

that's just leftover foam that were cut out from mattresses and pillows too. stuff that would've been trash but someone got the great idea of turning it into a $400 chair.

 

[Shadowknight]

You can get a really really big sack of memory foam at places like Hobby Lobby. Costs about $150 a roll, I think.

 

[drnickriviera]

Look for dog beds with memory foam. Don't remember the price I paid on ebay, but it should be fairly cheap.