The shutter speed control is a dial above the lens - speeds are 100, 50, 25, T and B. Hence why you don't really want to put anything faster than FP4 in as you'll struggle to get the right exposure when the sun is out!
It also has the smaller tripod fittings, there's even a tiny grub screw to stop the adapters from working loose (talk about attention to detail). I'll try to get a few photos later as it seems to be something a bit unusual.
As for price, it seems that you will always pay about the same amount for a quality item. I found a scan of a 1980s Argos catalogue a while ago with a kit of a Pentax ME Super, Pentax-A 50mm f1.7, AF200s flashgun and gadget bag for £189. In real terms that's probably what you'd pay now for a consumer DSLR.