I have a microgel radical mp that I am looking to trade for a k90 in similar or better condition. I may decide to sell it if the offer is good. It has 2 hardly noticeable scratches at the 9 o'clock and light scratches on the bumper guard. Even though I've had it for 3 weeks it probably only spent a total of 2 hours on court. I think it is easily a 9/10. The original grip was replaced by wilson leather (this grip was used for about 2 months on another racket), but I can strip it down to the pallet and give you a $5 discount on the final price. TW carries brand new head hydrosorb for $4.99, so you can get a new one. My email is dradowshagon @ hotmail dot com, please try to include pictures of your k90 if you are looking to trade. Size 4 1/2 only. Email me for pictures. Thanks for looking.