Well you're right, you can order San pedro chips and well if you know how to look you can find other small round and about 4 inch round cacti known to grow in the south west part of the USA down in to Mexico.I know but I hate when these huge companies start making decisions on what's best for their customers and what they think is right and wrong. Yea it's their company but it's seeds and I can order a lot more harmful things on eBay then seeds.
It is, however, is difficult because of the nature of seeds. But if @Autoseeds.com is almost done with a cc processor then I'm sure it'll be running soon