i buy my substrate (shredded and chipped aspen) from a local mom and pop shop near my work where i also get my live feeder fro my picky snakes, freeze it for a day or so and then let it thaw to room temp before use.
if you really wanna buy online, yes Amazon has everything. or beanfarm.com, reptilebasics.com and tsksupply.com also sell snake bedding/substrate.
also post some pix of your albino boy already.i don't think i've seen u introduce him to the forum yet.