if it's cheap, they may offer you the 2nd ones for free, if it's reasonably priced, you can return to sender on the 2nd package by not picking it up lol. I think if you go and tell them return to sender they tell you to pay shipping.
just discuss it with the seller if it turns out to be your stuff.
I futz with V2s, V3s and V6s. I could be wrong... but probably, most likely not, as far as I know.