Bought this at the Line Store in New York when I visited to attend the BTS Citifield 2018 Stadium Concert. I still have the receipt. It has been kept the same way I received it in the store all this time- still in its closed and sealed plastic bag!!! I haven't opened it. You can get this plush as if you just bought it in the store. 

My original plan was to collect all of them but started buying other BTS/BT21 Merch and concert tickets and it was hard to find them all. Now I'm selling them to pay some bills.