I have a purchased copy of VectorWorks 2010 (CAD software)(with serial number of course), basic package for the Intel Macs running OS 10.5 or better. I would like to sell it, preferably on the 'Fritter. However I'm having a difficult time trying to find what is a reasonable price for resale. There are a few selling it, with the architecture bundle for about $2,500-$3,500. I'm thinking I could probably get $250 for it on FleaBay, but have no idea. Amazon is sold out. Any advice? Interested parties? How do you price your used items for sale if there is no real existing market for comparison?