It might not look a lot, but I reckon I've preserved near enough a bushel of apples (about 42lb), and over 20lb of plums, as well as using several pints of vinegar and a good 20lb of sugar. The top left hand jar in the picture is dried apple pieces, which are such a success I'm going to do even more of (luckily I snatched a couple of extra apples as we left to come home yesterday). I'm also going to make some apple and loganberry curd as soon as Teddy gives me a decent break.
I'm really pleased with the amount we managed to preserve. I know it's a long long way from the kind of harvest we'll be dealing with when we're growing a larger percentage of our own food, but it felt like a nice warm up act.