well for starters, stay away from ebay crap. haha
+1 Are you using an impact wrench? Are you hand tightening them first? I've never broken a lug bolt before. I wonder if your lug nuts are seated against your wheel correctly putting strain on the bolt or something?
In other news, apparently I paid off my P5. I got a refund check in the mail for $83 from First Merit Bank. I called to double check and she said I have a $0.00 balance. Woo-hoo! I've been paying $300 a month instead of my $225 and simply over paid the last month. Nice!