Sold Item By Mistake. What can i do? :|

[IzHaN80]

Sold an item a friend gifted me -> http://wiki.project1999.com/Singing_Steel_Gauntlets
I tried recovering by purchasing every cheap item/gems/gold/pearl/jade stuff that would resell for almost the same price you would pay for them. I digged through more than 30 items without any luck. Then i kinda did ruin myself by purchasing lots of gems, runes, and even some weapons. I lost around 500p and i never got to see the item back. Can this be petitioned?