Maybe starting an alching service soon

Hi, I might be starting an alching service soon, but theres a few things I was wondering about before/if I start it.

Well first I'll do about 500-1k free alchs for the first few posters, but I'm wondering what to charge after im trusted. I wont be accepting real life cash (I don't have a PayPal, i don't do Pay by mail, etc.) and I don't know much about BH trading.

Can someone let me know what a good price per 1k alchs would be? Maybe if someone reading this has been in the alching business for a while, give me some pointers?