I hate to see business going to a competitor but if you mean Skytours of Talbot Street they have been in business for many years, are fully licensed and bonded and are one of Irelands most succesful travel agencieswith no danger of them closing.
(unless the Greens get another concession from the govnt to say nobody can use ariplanes anymore !).
I'd love to say they are crooked swine but they're not.
Naturally, you must first double-check that the price is the final final price inc. every last tax, fee etc etc