I would be careful who you buy from. That sounds cheap for an albino, not super cheap for a het albino.
I would be looking to get from a quality breeder. Save yourself potentially anguish. Also, regardless, do you have other reptiles now? Make sure to quarantine if you do.
All morphs are BI. Locale boas - BC, are sold by location of origin.
Take your time as this animal will live 20-25+ years if cared for properly. Try not to rush and just grab anything.