Sorry I've kept you waiting.
I took a picture out of my manual as well just to make sure were talking about the same gasket.
I cant see why it would be different in Ireland but i have my invoice here for the single gasket. Unit price £2.08.
As i tried explaining earlier the number two oil return pipe is part of the oil feed pipe. Your most likely going to have to take out the union bolt for the oil feed pipe in the block, to drop the pipe.
Theres two crush washers that should be replaced as well if you take out the union bolt.
I changed both my gaskets when i had my engine in bits, and the No. 1 pipe again on the car. Baring in mind the engine in my car has 130000miles on it so you may not have these problems. Your most likely going to have to remove the whole pipe from the car because the gasket may be stuck solid to one of the faces. Both my gaskets were stuck to the oil pipe. Scrape it off but go careful. To get the pipe out to scrape the gasket off, your going to have to remove it from the rubber pipe which is likely to have gone hard. I ended up cutting the pipe off and replacing it. Not cheap though, I paid £12 for the rubber pipe for the number 1 Turbo return pipe from Toyota. Lastly try and check the mating face of the solid pipe for straightness. One of mine was warped from the heat of the turbo and was leaking. Hense me having to change the gasket on the car.