Hi, Una, my sister bought lye to me in Merkur, Ljubljana (Bežigrad) for about 8 euros/kilo. I think, lye can be bought just in certain store of Merkur. She told me, that they also have bigger packages, which are relatively cheaper (Im not sure, but I think 25 kilos, which is toooooo much for me - if I would buy, it would be like sitting on the bomb).
About other things - I read that many things for soap making can be bought in Arstrade, Trzin (near Ljubljana), they should be most of all wholesale traders, and that they have in their shop in Trzin more than they advertise on the internet. I dont know if this is true, because I didnt contact them yet (but I intend to go there one day). Theirs web page
http://www.arstrade.si/ is unfortunatelly just in Slovene, but google translator can help you to translate.
Before I start making soap I never used EOs or fragrances. Till now I bought fragrances in ordinary stores (in bottles 10 ml). My daughters friend give me for christmas gift EO "31 zeliščno olje" (31 herbs), which is made by Just, Switzerland, packaged in 75 ml bottle. Of course I couldnt ask her for the price, but my daughter said that it cost about 30 euros. This is their web page:
http://www.naturaljust.si/etericna_olja.php. Again just in Slovene... Where do you buy EOs or fragrances?
What temperatures are in winter in Ireland? I assume, that they should be lower than in Slovenija, because Ireland is more north. Be fine, bye, Jelka