They come in any denominations simply add multiples of each denomination, to your basket, to reach the amount you require and you will receive a voucher for the total amount.
If you require more than one voucher please attach a note to your order indicating how you would like the total divided.
Also provide any details of the intended recipient and if the voucher is for a specific product/service.
The voucher will be in the form of a high quality printed card and can have a specific message added. If you require this please add your message as a note here or during checkout.
Basically the more information you provide, the more personal I can make the gift.