Regarding the IAA, it is worth noting that they recently upped the fee for ATPL issue to €600. Ryanair provide them with a captive audience of pilots. 600 cadets a year gives them €360k/year in ATPL upgrades. Add in licence conversions, type rating fees &DC and it's a nice little earner.
Worth noting that even the gold plated CAA only charge £240 (around €330) for the same service.