Booking flights - avoiding high admin fees

Apologies if some of you have a sense of deja vu but, as the only reply to my earlier post under Ryanair charges for using credit cards etc was from Andiamo (thank you!), I thought I might get a better response under a more specific heading.A friend told me they had booked Ryanair flights through Travel Republic to avoid the £6 each way per person admin charge. I did some research on flights for 4 people from Stansted to Rome and the price of the flights via the Ryanair website was the same as booking them through the Travel Republic website ie £242.94. On top of that Ryanair would then charge £6 each way per person admin charge - an additional £48. However, Travel Republic charge 1.25% of the total cost if paying by debit card and 2.5% if paying by credit card. That would be a saving of over £40. Has anyone else used an agent like Travel Republic to book Ryanair or Easijet flights and were there any problems?