Freaking Out and Need Answers

Ok, i had just set my shop up for the night, but wasnt completely afk yet. I come back and my 110 att dark nisrock bow was sold for less than what i put it in for, about 297 mil less!!!! I swear to god and on my freaking soul for what ever it is worth that i had put that bow up for 299,999,999, but it was sold for 2,999,999. I need to know if theres a way to change the price of items in stores, cause i know i didnt put that thing in there for that low of a price, that bow was one of my most treasured items that i would never in a million years sell for less than its worth!

I dont want sympathy, but thanks for any any ways, i just want to try and get my bow back