Now I'll be able to book flights on Ryanair and not pay a credit or debit card fee.
Yep, for the time being. But it will at some point go from free-of-charge to pay-to-use, based on: "As a special offer to Visa Electron card holders, Ryanair,
for a limited period only, will not apply a Debit Card charge." Emphasis mine. That's from:
Ryanair.com - FAQS : Table of Fees (English)