What was the last thing you regret buying?

 A pair of summer trousers/pants in size large. I'm finally losing weight, and now they will be too big       .

Not too late though, I haven't worn them, so I'll send them back.

for me it's got to be either the wrong kind of food, I regret buying...or an piece of clothing that will never fit me. I can not seem to get in gear on both these things at times...and my weight.  I am now going bra-less, because as an incentive to lose weight and never go back, I tossed my larger clothing out the door, and then gained weight over again from not passing up the goodies at the store...though they seem to always be under my nose otherwise anyway for some reason. so here I sit, squeezing into clothes I really should be wearing much looser then they are probably... raising up my blood pressure in the process. this is as the Dali Lama said my physical disabilty I was apparently born to have to bear with in over-coming during  this lifetime. It wins more then I do and always has most of my life so far. It has my cardiologist in an "sweat" also most the time, he goes from being crabby, to funny, to down right "parental" at times...to almost "sincerely" begging me not to "give up" on it.He says he don't wanna meet me at he hospital in near death...nor an vegetable from lack of oxygen to my brain..in trying to get to me in time fast enough from living out in the country. Yep, my biggest regret is not doing things right for my health I guess...by the things I buy.     

A coin...a $10.00 gold piece to be exact, 1911-S.

It appeared to be uncirculated; I couldn't see any wear on it, looked pretty high grade. Paid 3.5K. Turns out it graded a high grade circulated (AU-58) worth about 1.5K.

May I ask how much you paid for that gem?