You may have a form of Baryancistrus, but as far as i'm aware L047 "Magnum" plecs do NOT have spots. I could be mistaken, but i'd like to see a picture. L081 and L177 are similar to L047 with spots. Also L085's can have similar striking white markings.
I bought this fish from a local world of water sometime within the last 12 months and payed £45, which at the time was the cheapest i could find them. Admittedly they have become available for a little less in some places now. The price i have listed is the price i am selling him for, if he doesnt sell - i shall keep him. Simple.
So unless your interested in purchasing him do you mind poking holes in potential sales? He's a well looked after fish, and if someone locally wants to buy him/her and if someone is interested in a magnum plec the price i have him reflects a fair deal given retail prices of these fish locally. Cheap ones i have seen, as im under £30 were from shops i stear clear from. Yes i listed him a little on the 'extortionate' side at first, but i amended this soon after as i realised the price these can now be found at from shops.
Thanks.