Lots of good advice here. I was surprised to log-on and see the thread at 3 pages in length.
First off, I am not anti-SAE. While I prefer the metric system 100 times over, I have no problems with fractions and decimals. Second of all, I am not an airplane mechanic, or a heavy equipment mechanic, or a diesel mechanic, or any of these other careers that still see a majority of SAE fasteners.
I also don't have the space in my small garage for a dedicated SAE box. If I did have the space, this thread would lose some of its point, wouldn't it? I see the value in having a small selection of SAE tools for those items that pop up, I just question if I really need more than one set of combo wrenches and a few 3/8 drive sockets. I mean, is there really a need for SAE from 5/16 all the way up to 1 1/2?
BTW, the vehicles that see most of my time are a japanese motorbike, a modern British motorbike, a 1998 Pontiac Grand Am, a 2007 Ford Focus, and a whole fleet of racing bicycles (all metric...I was a racer in my faster days).
I also agree that recouping the money lost while trying to sell and "thin the herd" might not be worth it. But, part of me would rather see these things used than sitting in a box collecting dust and hoping for the chance to spin a 1/2 inch nut.
Just thinking out loud. It's interesting to see how everyone else handles what seems to be a common problem.