I am unsure whether to go ahead with a sale

[velouria2004]

I had someone bid £106 on a vintage jacket I'm selling. I e-mailed them as I only had it listed as domestic deliveries & they were in the US so I said I would need to add postage on top to the US. I also noticed the e-mail address is different to the name and address on the eBay account. Then they asked me how much is the price, which is weird as it was them who placed the bid. I told them they had bid £106 and then they said they they are purchasing the item as a gift planning on paying an additional £200 for me to help purchase a gift card & help ship it to their cousin's address. They also said they will reward me £50 for my honesty. Not sure what that means. But that would mean they are now paying £356 plus costs for gift card and postage. I just asked them to confirm where it is they want me to send it & now they're saying it's a UK address I need to send it too, but they didn't send me the address even though I asked for it. They seem to want to pay me before they give me the address. Does this sound dodgy? Unsure whether to go ahead with it. 

[fargvs]

Can't see anything listed on this account ... but, you are being set up for a SCAM and will receive a  fake payment confirmation ... do not respond, remove the bid and block them here >

https://www.ebay.co.uk/help/selling/listings/creating-managing-listings/setting-buyer-requirements?i...