Found 31st JanEdited by:"Muig1972"
Just spotted that Owlboy is available from a few sellers very cheaply on Kinguin. I got it from "Keysforgamers" for £2.97 + £0.40 Paypal fee. At the time of posting, 3 sellers have it for under £3, then it goes up to £4.03. (Historical lowest price on Steam is £11.39)