I also did a single purchase and I must say I'm quite impressed (~ 1.8 BTC).

Shipment speed - very fast (few days)
Price - reasonable
Packaging - very safe, content would have survived even harsh mistreatment of Package

The only thing that surprised me was the complete lack of a printed Invoice or any other paper in the Package though...
If that's the case for international shipments as well, customs may naturally end up with questions (and demanding all paperwork) for the recipients.