I have...
06 R6s (my bike)
04 R6 (my girls bike)
03 R6 LE (being fixed right now. Not sure of the problem but it has NRC engine covers, sprocket kit, full system exhaust, and K&N filter)
I will have to see how it turns out before I put a price on it
04 R6 (picking it up today, cause I couldn't get a truck yesterday.)
03 CBR 600RR (gotta get a title for it)
06 ZX6R (just sold it yesterday for $4500)

there is one more bike i might be picking up from a friend. but I dont know yet.