Agreed to sell me his Ion board- I paid for it- 2 days later he refunded me my money because someone else offered him $5 more for it (it had nothing to do with timing either- I paid immediately (as I always do)- his refund simply said someone else said they'd pay $5 more, so he was taking that offer).
Didn't even contact me- and it was supposed to be shipped by then!!!!
**Edited** He at least tried to find a replacement board for me a couple days after the fact- doesn't fix what he did, but at least he tried.