trade value?

It's really a personal choice! If you really like the cinny more than your pastel then do the trade! I would still ask for some cash with the trade, min.$200! Without the cash, it's really a matter of how badly you want a cinny!

Also... Cinny females in that age/weight range are plentiful out in the marketplace. Pastel het pied breeder males are a little harder to come by. Personally, I'd go grab a het for pied female. I saw a big breeder-sized girl advertised on Fauna just today for around $350. If you snatched her up and put her with that male, you would do very well for yourself in the long run