Do you get more than 10 cents back?
Depends on the bottle. In Sweden it varied between 1 and 2 Kroner (15-30c).
Just to clarify, what happened is that I had 41 Norwegian kroner left and I thought I'd bought 41 kroner worth of stuff, but because of the deposit it turned out to be 42, so I put it on a card and I still have the 41 (although no doubt I'll be back in Norway in the not-super-distant future).
Managed it better in Sweden - have just left Stockholm with 2.
You could have done what Tash did at our last Swedish shop and bought 100 Kroner worth of stuff with the first 75 Kroner in cash and the rest on card (although in reality it turned out to be 96 Kroner in cash - a miscount somewhere - and 4 on card).