What is your horse worth?

Hmn... I would guess 4500, but I could be way off. She's a 14 y.o. OTTB, confidently jumping 3'6" (can go to 4'+ but it's not as pretty), jumping courses, auto changes, sound but is on a supplement. She is very pushy/dominant though and needs a confident rider who can deal with her; if you aren't in charge, she is.