Guild Wars 2

I have a $25 (visa) gift card, and had planned on buying $25 worth of gems, however… there’s only a $10, $20, $35, and $50 option.

Is there a way for me to combine the card with another card to buy $35 worth (so I don’t end up with $5 left on one of these cards that’s impossible to spend outside of the internet because no one knows how to put them into their registers. -_-)?

I would try to just enter the card to see if there’s a way to enter a second card, but I really don’t want to risk the transaction going through with just the gift card and arenanet treating it as me trying to scam them out of $10.

just go add $10 to that card at a store that sell those cards, walmart for example.
remember you have to register those online so they will clear the internet authorization checks.

If it isnt a re loadable type of card just go buy one of those but look for one with no initial loading fee and push that up to $35 with a some cash.