I have recently been getting some certificates from Roscommon and have been pleased by their service, being in Australia means it does take ages to get anything.
I've been using the Mastercard Travel Money card for this purpose and find this is very satisfactory and means I don't have to give the details of my primary card through the post.
The cost has been 4 euros each and response has been fairly quick when I've ordered a single certificate but the last order I put in was for 9 certificates and from checking the credit card action nothing has happened 3 weeks after sending it, maybe having trouble with one may be holding up the order.
The office will not contact you by phone, especially overseas and no net either so if there is a problem its all snail mail, they do give you a number to call and this got me through direct to the person concerned and the problem was solved very quickly, she even let me order another couple of certificates there and then so it actually saved me time and money.
It seems to work fine if you give them exactly the information they require, don't worry about their form just make up your own and be sure to sign it. I'll attach a copy of the form I've been using.
