I doubt he was the breeder for your snake, the price is off and he clearly doesn't know what he has. It wouldn't be far fetched if he got the BP in a trade and just had it on his table. Some breeders buy or trade bulk to add something different to their table. A few years ago I picked up my pastave for $30 because the vendor had gotten it in a trade for some leos and thought it was a lesser. I told him it looked more Mojave to me and he said he wasn't sure but priced it basis the cost of the geckos he traded for a lot of BPs. I went home very happy but had him quarantined for 6 months, fast forward to present day he has sired by first ever clutch of 5 eggs with a set of twins.