Got my 21R with all the SP parts from Cali with a title for 6,600, completely rebuilt ground up. I still think that it was a steal.
But then there was the unbelivable 28 Repsol that just sold for 6,500, which I feel fell victim to the holiday season. Should have gone for more.
I've talked to others that wouldn't let their 28's go for 11,000..... I feel the same about mine, there's no reasonable price I'd let it go for.

All said, a titled 21 in stock condition worth buying... I'd say 5,000 and up.
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MC21
04 NSR50R
93 CBR F2
98 CBR F3 track bike
95 VFR750
89 FL400R Pilot
90 FZR 4/600