The parishes Irish Genealogy have are not included on RootsIreland - at least none that I can see...
The detail seems to catch out many people is that RootsIreland does not contain records for all counties, or even for all parishes in the counties they do cover - so I'd recommend a good check through the list of sources listed (even though it's not kept properly up-to-date) to see if the county, parish and dates you are interested in are available, before spending any money.
The counties, or part-counties, they dont cover include Kerry, Carlow, Clare, Dublin city, Cork city & West County Cork etc... they also dont include certain parishes in Co. Tipperary, only RC records in Louth and Waterford etc...
Shane