Don't confuse RTG with HBRTG. Low quality "no-name" RTG's are cheap now in Asia; it would not surprise me if people are bringing them in and selling them cheap. Factoring in taxes, I think "name brand" (DFI, SABF, Quian HU, Raffles, etc.) HBRTG in the GTA go for at least $500 plus taxes? I would guess the asking price for such fish would be higher, but that the lower price could be had by bargaining.
Would anyone care to post some common prices seen right now around the GTA and also list the stores? It would be helpful to list the farms the fish come from and the specific type of fish as well.