I got my D4 at a small headphone shop in Pantip Plaza, Bangkok, but I suspect that they simply order them from iBasso and resell them at a markup - for me, the exchange rate between the Pacific Peso and the baht was sufficiently good to make it viable.
Khun pasa Thai me dai ?
http://munkonggadget.tarad.com/product_150311_th
As I type this, 10K baht is $334 per xe.com, but you wont get that rate in an online transaction. Face to face, I was able to get a good deal on the D4 and a pair of Grados, but online you are clearly better off with the iBasso site.
ps the baht is a surprisingly strong currency, and the Fed just keeps printing more money - interesting times ahead for several Asian currencies, IMO.