If it's not at Gerry's in Soho, then you've go no chance of finding it anywhere in the UK.
I'd try Ebay. If you buy a plain mask you can draw the stitches on yourself.
You could buy a cheap skateboard from a garage sale if you could find one. Or you could buy it from a pawn shop or a toy store. You could buy one from anywhere.
If you were a Tudor you could buy flowers but they were expensive.
you could buy 50 pounds of candy
One could buy this drive at Best Buy an eBay. Best Buy is a little more expensive compared to eBay, but you could purchase the drive from Best Buy instantly.
you could buy it from walmart
You could buy them at Target!
A car or a horse? Where could you buy a mustang horse? [Sorry about that]
You could buy five items from the Dollar Store.
Probably anything that you could buy now for a dollar.
You could buy it on a site called price grabber.com.