Massivley over priced! Also that picture is not of the actual fish and that picture is actually some kind of Sturisoma - it wont be the Rinelocaria the only common one is the red one.
Also if he just has it listed as Rinelocaria sp. It makes me doubt what it is - whiptail catfish get mixed up and tagged with all kinds of species associated to them.
If it is the one in the pic it is Sturisoma not Rinelocaria - I paid about £12 each for my two which have turned out to be a male and a female I would love some eggs one day.