Irish (Ireland) Gerl Definitive Animal Stamps

Does anyone collect these? From what I can tell in the catalog, there are about 49 issues - dog, stag, winged ox and eagle - without major varities (which I don't care about.)

Issued from 1968 to 1982, they are Scott numbers 250-265; 343-359; 395-402 and 466-475.

I see a 2009 cat. value (mint) of about $55.

Any idea if they are hard to come by at all and what they may cost me.

Have been poking around different places, and I think because it's a series released over several years, it's been difficult for me to come up with a ballpark price.

Any thoughts would be appreciated.

Nothing rare. Any Internet auction, e.g. ebay, will be of help. Maybe not the whole set, but parts of it. If you start with the higher values, smaller will pop up.