Yeah I definitely wouldn't feel comfortable spending Grand Seiko money on a sight unseen purchase. That's why I bought my GS from a local dealer, even though I knew I could have purchased it online for cheaper.
I should also mention that shoppinginjapan provides an option to mark your item as a 'gift'. This requires you to send the money via bank transfer. I tried this once but the process didn't go as smoothly as expected, due to some unexpected service fees charged by the receiving bank.
http://forums.redflagdeals.com/internat ... 2043938/3/