After searching for ‘Abair! : faclaír’, the only Gaelic dictionary that my tutor recommends, online for a while it looked like I was going to have to do a long and probably futile crawl around second-hand bookstores. Or just agree to pay anywhere between £23 and £2500 (really!) for a book which should cost £5.99.
Then I found the Comhairle nan Leabhraichean or The Gaelic Books Council website which has copies of the dictionary at the correct price!
I didn’t get particularly far into the purchasing process before having to switch to English but that’s sort of the reason I’m buying the dictionary!