Is this a good idea for a product? Would you buy it?

Have you ever really wanted a can of soda, or beer but you don't have any in the fridge, but you really want a cold one? You could put ice in it but that would water it down. So I have an idea for a product, (not going to specify exactly) but it could cool a can of a drink in seconds. It would probably cost about $0.40 per (though I will most likely develop a more efficient way). So say there was a decide that you but plus say $0.25 per can, would you buy it to have instantaneous cold drink wherever, whenever? I already have a few 3D prototypes designed (using SketchUp), but is this even a good idea? Thanks

Price will be important, but yes, I am sure it would sell if price right!