Living in South Africa that's pretty tough ... I phoned two local stores asking for headphone amps, they said they don't really sell those and that they'd phone around ... Came back with Pro-ject amps as an answer! Ha!
Finding a Chord Mojo supplier was a big surprise
I guess I should try find someone locally via the forums and hopefully I can hunt down a forum here in SA of head-fiers
I'm like you when it comes to stores with better headphone gear, most only have beats, bose, low end sony and few other off brands. I've found a few Head-Fi members here on the island but have only gotten together with one so far.
You might want to try a receiver with the HE-400i as most stores will have AVR for home entertainment and some of them have decent headphone outputs.