i have 2 albino senegalus bichir, they were £20 each and i have never seen a NOT albino senegal bichir...
but i do have an armored bichir ( polypeterus delhezi ) he was quiet expenisve, but at my lfs they also have the BIGGESt type of bichir, its brown and black and can get 2' long but they were £50 each. thats about $90.