I don't know much about non-US shops, but the times I have ordered from Compuquick and Software Hut they have been pretty responsive. It's been a few years since I've ordered from them but I have no reason to believe anything has changed.
Also I know my company is very responsive.
www.anachronismindustries.comWe are new so our inventory is limited, but we are growing. :-) We always respond promptly, at least we strive to.
