Just got a £3 foil

Congrats :P

congrats! :-)
and I'm envious, I haven't gotten a single foil card :-(

Nice one, but remember: a £3 foil is only a £3 foil once it's sold.

Found a foil for Toybox Turbos just before the summer sale started, lowest on the market was £1.92. I didn't care about maximising profits so put it up for £0.57 so I'd net a nice, round £0.50. It's still on the market now, someone else is now asking £0.50 and 1 sold yesterday for £0.48. The sale at £0.48 was the first time anyone has bought it since February 15th when it got £0.56. Foils can be be difficult to sell, good luck!

Like said before - foil is only worth as much as you can sell it for ;) it's very plausible that in the time someone is willing to buy it it will no longer be £3 but just £0.3 worth ;p