Socom Gear M82 is pretty much impossible to get now, it's a limited edition.
Only version available now is the short one.
M82 > M200 the build quality is MUCH better, it uses a Version 2 Gearbox very easy to upgrade.
$850USD in Asia yeah you're looking at the 2K mark for it here, can you imagine the cost of shipping?
You can get a real .50cal for about that price in the US =/