One of my brands is the very affordable (usually) Medana - which was the sister brand to Roamer. This one cost me £2.96 ($4.50). Its working fine.
Admire the lugs.
One of the nice things about MST movements (by Meyer and Studeli) is that the calibre is usually clearly shown.
Christoph Lorenz has the 15 jewel version here:
which he describes as "can be considered as one of the best made and most beautiful pin lever movements."
Its a tad small at 29mm, and the dial is a bit scratched, but I'm not moaning for the price which included a new strap.