Youve clearly under priced these.
If I were you, with the interest shown here I would do one of two things, bung them on eBay and watch the price fly, sure you may upset a few peeps but it's yours to do what you wish with.
Alternatively if you were feeling charitable, inspect the build plans of the potential buyers. Check out the previous builds and make yourself happy that they are going to a good home not some one whose going to bolt them to a lowly Townsend, a beat up old classic or some other totally unsuitble steed.
Or alternatively just sell first come first served, if you can afford to.