In December each year, the Irish Post Office issues a Year Pack, an illustrated folder containing all the Commemorative Stamps issued during the year. it is essentially a “face different” collection. Generally speaking stamps that have been issued in (say) sheet, booklet or roll are only issued in one format.
The cost of a Year Pack is variable. Anywhere between €27 to €35 is the norm in recent years. The Philatelic Bureau usually retains five years stock of Year Packs. Last year, I bought the Year Packs (2006-2011), which was a major boost to me, having given up Stamp Collecting for more than a decade.