Tempted to sell the storm and buy a Big Bang R1.

Any ideas what's it's worth?
16k from new, de-baffled original cans, K&N, Dynojet, made 104 bhp on the rollers, datatool, datatagged, smart water etc etc. Been used everyday for the last year or so but very good condition. I'd say above average.
Your opinions would be appreciated.
Jim