Question about SteamTrades

last sell value - posibilty to sell

a foil card worths whatever people want, since the history is low I think is very unlikely people accept a trade with it, just put to sell and hope to be sold

If you expect getting some game for the value of £15, this would be very risky for the trader who accepts it, selling Foils is the worst, today they cost £15, tomorrow £5, so yeah making someone to accept this Foil for good thing can be difficult.

Your foil card is worth whatever someone is willing to pay. It's not "worth" £17.14 - that's just what some optimist is asking for it... :)

I put my foil cards on the market and forget about them. Maybe next month you notice some extra money in your wallet, or maybe it's never sold becaue 20 cheaper ones were listed. :) Good luck! :)