If you wanted to start doing this you would need to provide enough to make it worthwhile to the purchaser. You would also have to do the collection under laboratory conditions and package it as your supplier wanted. Not a horrible idea, but hardly an endevour for the average hobbyist.Not exactly a bad idea. There is some guy who collects all types of spiders, milks them, and then sells the venom so it can be used as an Antivenom.
I live in canada, my father is an RCMP officer, and there ARE animal cruelty laws.<edit>
Yes, bagging and freezing mice that I breed for the sole purposes of feeding is way easier than ordering prekilled frozen mice. That is probably the reason why I breed my own!
I live in Canada. There are no animal cruelty laws. Pets are considered personal property. Right now there is a petition going on in Canada for stiffer laws against animal cruelty because some dude dragged his dog behind the truck until it was dead, and he only got a $500 fine.