I'm not active anymore though I do check in every now and again to keep my account ticking over and check on my horses.
That said, none of my horses are for sale. That includes the Diamond Apples, Retired Coats, Active GA's and Specials that I own. They're all very sentimental to me and nearly all of their BM items were bought with real money (back before there was a different challenge or quest every week and BM items were hard to get...).
Thanks for understanding :)