................................................what

Profile link isn't enought proof, and if it sold for 29 why not suggest at 29? Using the compare on bp.tf it looks like it never sold for 29 keys: http://backpack.tf/profiles/76561198302223132#!/compare/1470182400/1470614400

I suggest you take a screenshot from your trade history since compare link doesn't clear on both seller & buyer.

Probably keys spent on the same day.

There are more sales for example http://backpack.tf/profiles/76561198033058187#!/compare/1467244800/1467417600

edit: and here http://backpack.tf/profiles/76561198091136307#!/compare/1467936000/1468022400

edit2: and here http://backpack.tf/profiles/76561197964171516#!/compare/1468800000/1468886400

edit3: and here http://backpack.tf/profiles/76561198207924383#!/compare/1469059200/1469145600

edit4: and here http://backpack.tf/profiles/76561198156255538#!/compare/1469145600/1469232000

edit5: and herehttp://backpack.tf/profiles/76561198157630896#!/compare/1469232000/1469318400

and here http://backpack.tf/profiles/76561198084976847#!/compare/1469232000/1469318400

edit6: and here http://backpack.tf/profiles/76561198113673803#!/compare/1469491200/1469664000

and you bought it here: http://backpack.tf/profiles/76561198039251966#!/compare/1469577600/1469664000

At least you know how to post proof, unlike any other first suggestions

But why 24 instead of 29?