Re: Picture/poster framing Basel
1) Manor do it
2) Migros at M-Parc
3) There's a small shop/company on Gueterstrasse, Tram 16 stop Solothun strasse (?) near cafe del mundo.
Yes, IMO, it is expensive for what it is.
We've used (3), she was quite expensive, c. 200 CHF for an antique map (kind of between A3/A2 size). As it was a good map, we felt it worthwhile, but I wouldn't do it for something like a poster.
Can you get something from IKEA (Pratteln) that will fit?