They come and go. I've seen about five really clean 4x5 Normas come up for sale in about six months, then no more for awhile. The best will be studio cameras lightly used. And it helps to know how to tune em up. But you can get web instructions for that. It's generally easy. And if needed, all the standard F and P components are compatible. If you can find one with the original tapered bellows they're way more versatile than the standard box bellows on the later cameras. But again, condition is everything. My own tapered bellows look like they were made last week. A few controls on the Norma have a little rougher feel than on the F's, other things, smoother. But overall, it's a more solid rigid system than the F's, while still dramatically lighter and more compact than a P camera. Similarly equipped my Norma is only one pound heavier than my F2 was. And it is really a nice camera to look at. I get compliments on it all the time. You just don't see that kind of fit and finish anymore in this era of injection-molded rice paste.