I don't know if any of you have ever used them (they're a general gaming supplier, if you've not heard of them before), but I'm pleased to be able to report that I'm rather impressed by the quality of their service.
I ordered four books on March 21st. They were posted on the 22nd, ordinary air-mail, and they arrived here on the 28th.
The packaging was good. Items wrapped in individual plastic bags; the order enclosed in a padded bag, and then in a mailing cardboard box. Not a trace of detectable damage.
Even though they're in the USA and I'm in the UK, I'll definitely be using them again for items that I can't find over here or only at ridiculous prices. They're definitely worth checking.