Sounds very high to me. I got a killer deal on mine. 2009 Xciting 500 RI with a 50 litre Shad trunk, 1 owner, dealer maintained, 6K miles, does have a few scratches and scrapes. I gave $2100. Then I sold the trunk for $150 on eBay.
Then bought a used Givi windscreen for $60 and a smaller 35 litre Bestem trunk for $85. Great deals are out there, it just takes research, persistence and patience.