http://www.sillyjokes.co.uk/dress-up...fx/fx-wax.html
You can buy this stuff in a lot of stores. It's jjust wax so yeah, it's not hard to find.
You don't need cake blood, gel blood, blah blah blah etc. Just use homemade fake blood to use with the wax wounds. Just use a sponge to put on caked blood.
My friend and I made pretty good looking blood with corn syrup, water and food coloring (I can't remember what else) Anyway, there are tons of recipes all over the place. :)