Hello Alex,
Thank you for your question about your snipes. I think you are referring to item
115233610216. You did no win this item because it is a Fixed Price listing, not an auction, and you bid $100 higher than the actual stated price. eBay has a mechanism in place to reject these bids so that you don't overpay.
In the other cases, you did not meet the minimum bid increment. You can see these errors by going to your "Completed" tab and hovering your mouse over the exclamation mark next to the auction with the error.
Please let us know if you have any other questions, or require other assistance. We are happy to help.
bidslammer