http://ninja5eps4gglpqbqwn237s3sg33h7qpm4mxce6cx2vs55jcpk5ajeid.onion/faq
Base purchase rate is 25.00%, lower limited at 15.00%, with 0.50 discount points for every $100.00 in balance. With a fixed purchase rate of 25.00%, the purchase price for this account would normally be $500.00. Most vendors you will find use a fixed rate for their services.