They are diecut, very high quality (haven't dared stick them on anything yet but they haven't come off the paper and the print quality is beautiful) and cheap (if you order 6+ you get 50% off! ) (cheap enough I can add a small markup to make an actual profit and not have people run away in horror I can't really do that with the t-shirts )
Size: 10cm high backing paper, so depends on individual file. (That's a NZ 20c coin in the bottom centre)
The diecutting means that they cut to the shape of the file, so transparencies work very well - for example, a close look at the Tui sticker
I've never made a direct sale from RedBubble, but their print quality is fantastic, and they're only over in Australia, so I order cards, t-shirts (and now stickers) for resale/me/my family (and have sold a couple now, and will be selling these the next time I have a stall, probably Armageddon).
Problem is, I love giving these away! I hope I have enough left to cover costs