waltersalas:
That is because the GAE was a limited edition version with only 1200 units made available worldwide.
The G version is the generally available version of this table and it is the USD$4K price was originally set for this variant of the table. Technics decided to price the GAE at the same price as the G as a sort of added bonus for those who signed up early. Basically Technics did not upcharge for the GAE badging or differentiated silicone formulation in the feet of the turntable.
Essentially if you purchase a G, you will have the same TT that I have on my rack minus the badge and with a slight difference to the mechanical nature of the feet (i.e. silicone formula).
Like all things you can find a GAE on ebay; for a price that is.