yup... $4820 is KKB's retail for a FZ6R in excellent condition... when dealers in my area, central Texas, have them on the lot, used, they are between $4500 and $4900...
I'm trying to sell mine too for $5000 but I have zero miles on it... its a little too big for me, wish I would have realized it in the show room lol. I keep gettting people wanting $4000 for it. Good luck.
there is a inexpensive option to lower it - they replace the spring - there's a dealership here that does it - central yamaha in plano texas - they get the spring from overseas somewhere or maybe it's a spring for the xj6 that fits out bike not sure - been a while since i was looking at it - it was a lot cheaper than the lowering link etc - you might want to check it out