There is a shop in the UK called Cex and it is technology based selling games etc, they started to install a few machines last year. I found the whole experience straight forward and painless although the fee was a little too high, can't remember what it was but it was approaching the 10% mark.
The high fees are normal as they are still in the starting phase. After some years the fees will come down significantly. Especially when the adoption rate increases by a lot. The more people are using their ATM's the lower the fees will be.