Yes pet stores will come up with fancy common names as a selling point. Best idea is to just stick to online vendors and expos.Do shopkeepers make up names, I would not know what type I am looking at in the pet shop but some of the names seem a bit far fetched!
I saw some labelled big ball baboon and cobra baboon!
Yes, many do make up their own names for Ts but that isn't their only trick. A favourite is to sell an unsexed specimen only for the buyer to get it home only to find it's a mature male with maybe only a few months of life left.