Hello John,
Thank you for your question about this item. We looked to see what we encountered when we placed the snipes. eBay returned the error, "'Error in quantity. The quantity was either missing, invalid, or zero." We've never seen this error before, so we are unsure why eBay returned that message.
We have a trace on your account in case it occurs again. Thank you for taking the time to write in, and we regret not having a better answer this time.
bidslammer