It'll be interesting to see what the June GB numbers say when all is said and done.
Here are the results from the past three months:
March:
Exporter Modified AK Magazine 8 guns @ $673.88 avg.
Exporter Modified (All types, AK, paratrooper, Honor Guard, Misc. Mods): 14 guns @ $667.35
Exporter Modified (All types, only VG condition): 4 guns @ $579.25
April:
Exporter Modified AK Magazine 12 guns @ $608.25 avg.
Exporter Modified (All types, AK, paratrooper, Honor Guard, Misc. Mods): 21 guns @ $558.05
Exporter Modified (All types, only VG condition): 7 guns @ $635.57
May:
Exporter Modified AK Magazine 11 guns @ $558.45 avg.
Exporter Modified (All types, AK, paratrooper, Honor Guard, Misc. Mods): 20 guns @ $543.10
Exporter Modified (All types, only VG condition): 7 guns @ $594.00
I don't break down the exact type of gun beyond "AK, paratrooper, Honor Guard, Misc. Mods"
Still, the data seem to say that the commercial market is cooling off a bit in general. You could easily argue that the higher end guns are maintaining if not climbing in price but you've also got to remember as well that the AK mag SKSs will be heavily influenced by current AK prices. SOG has AKs for $500-$600, Century has PAPs for $500, WASRs for $550, AIM has IO AKMs for $489.95. Until those prices move, I doubt you'll see much appreciation of the AK mag SKSs.