Here are some of the charges(from FAQ at 3v.ie)
4.1 What is a 3V Voucher™ going to cost me?
To purchase a 3V Voucher™ for less than €100 will cost you €4. So for example, the purchase price for a €90 3V Voucher™ is €94 in total.
To purchase a 3V Voucher™ for €100 or more will cost you €5. So for example, the purchase price for a €150 3V Voucher™ is €155 in total.
4.2 Are there any other charges?[back to top]
Other charges arise in the following circumstances:
A €2.50 charge to redeem any unused funds left on your 3V Voucher™.
You can check your balance or previous transactions by calling 1 530 333 123. This number is a premium rate telephone service charged at 33c per minute. Rates for calls from mobile telephones may vary. Alternatively, you may check your balance and transaction history ONLINE at the My Account Section.
4.3 Are there any charges if I shop abroad using a 3V Voucher™?[back to top]
There are no charges for using a 3V Voucher™ to shop abroad on the Internet, by telephone or by mail order. An exchange rate will apply if you make purchases outside the Eurozone (e.g. Sterling or Dollars). This exchange rate is set daily by VISA and can fluctuate depending on exchange rates prevailing on that day on world markets. A commission fee of up to 1.75% of the transaction amount is included in the rate of exchange.