Gyarados probly' 200-300, Karp 300-500. Players pay me more handsomely for Kanto pokemon, especially these, that are great for their first round trip of the E4. The IV's of my h/a ada karp were a bit lesser overall than yours, yet fully trained myself, I still barely peaked 400 - three weeks ago. More and more are jumping on the Moxie bandwagon, unfortunately.
Good luck.