They vary from £37 to £lots on Amzon for the 35mm.Something like that would do me fine I think so long as I can transfer from negative to positive. I do have transparencies but the ones I mostly want will be on 35mm or 2 1/4 square.
I want to post them on to a local FB page which is inhabited by mostly locals unlike the other "local" pages infested with others who have had a holiday and have opinions of no real value or interest to anyone else really.
I think the issue for you will be the 2¼ square (120?)