My neteller card in the UK is issued by Altair.
http://web.neteller.com/content/en/a...eller_card.htm shows the fees associated with using it.
The fees are actually better than the previous neteller card, but still, in my experience I'm hitting around the 3-4% mark to get my USD from neteller to GBP/Arg Pesos cash.
The card works exactly like any regular Mastercard/Visa. P.O.S, purchases online etc etc.