The resale of the AKSAs is difficult to gauge, and certainly well outside my control. The informed market fixes a price, largely based on original kit cost, add-on costs (transformers, case) and perceived worth. However, if you audition the amp alongside the greats in audio, you find it ranks very well, and if the buyer were ignorant of the origins of the AKSA he could easily be persuaded to pay much more. This is, of course, up to you as the seller..........
As a guide, the 100W stock kit is $USD530, the Nirvana upgrade another $USD130, and the Nirvana Plus upgrade another $USD220. The transformers cost about $USD100, the case maybe $USD80, and binding posts and IEC connector maybe another $20. This is a good guide of cost; your labor is not something easily recovered, but if it is really built well you could probably add up to $USD500, making a total of near $USD1600. This is quite high as a 'used' item given original costs, but it's probably about a third of the commercial price based on sonic ranking.
Cheers,
Hugh