I've emailed the seller with proof showing I paid for 3 so will get things sorted in due course :) I've been thinking about it & maybe it's not a TM bug. Maybe my mouse registered a double click ie. the seller has 5, I bought 3 & the double click tried to buy another 3 but failed since there are only 2 left so TM kicked me back to the sellers auction to buy the remaining 2. Anyway, no biggie & will be sorted with the seller...cheers.   PS. The screen shot I posted. I've never seen that before, the ability to buy more of the same through my WON listings. Something learned for a Thursday arvo.  

Yes, but I'm not that fussed about 99c. Just thought it was funny & TM staff may want to pass this possible bug onto those in charge.

Just checked my WON auctions & it's giving my the option to buy 2 even though I paid with PING for 3...lol. Too funny & def a bug.