55 rated DR, 26 yo

I have this guy who has the highest av. training in my squad, value 600K, however i want to sell him and i have no membership so getting over 100K profit would be good, but i don't know how much to put him up for. I spent 315K on him (oof) and i wanna know if i flopped here with this transfer

https://www.virtualmanager.com/players/16623468-gabor-gabirsz

Sold for 600K, lets go. Ppl were rlly interested in him lol