Write it off or ebay exit - you are unlikely to recover significant money from this. If you aren't doing well, and don't want to do it, then get out!
300 million people in the USA. 16 million in the Netherlands. So ppc campaigns are far less effective here.
The obvious question is: so why aren't you targeting the global market then? We originally thought that a local approach would help us get off the ground more easily. Perhaps we made a mistake there.