Great find!
I have two that spring to mind - one was a complete copy of heroquest for £2 from a charity shop. I saw it through the window, tucked away in the jigsaw puzzles, as I was coming home from college about 10 years ago. Snapped that right up.
Then last year as my partner and I were driving back from sheffield we passed a charity shop and out of the corner of my eye, at 30MPH, I swear I saw a copy of battle masters on a shelf behind the counter. I asked my partner to stop and she, with rightful annoyance, agreed. £10 later I had a complete copy of battlemasters with not a single thing missing.
When I used to work at dark sphere we did buy ins and trade ins of miniatures by weight in exchange for store credit, and before we sold it on to wherever it went ( never got a straight answer) we were allowed to buy anything we wanted at weight cost. alot of the time it was basically scrap - bits from new sprues, innumerable 2000's era space marines, but one massive collection came in once just PACKED with old lead. I got several complete citadel box sets (chaos warriors, knights of law, dwarf rangers, thorogrim, etc ) and loads of random vintage stuff, lots of mk1 rhinos, etc etc plus a literal suitcase full of useful bits. I even have a complete unit of ricos republican guard. I think i spent about £100 in total on what now seems like £1000 of old lead. If I hadn't been a student at the time and didn't need the money for things like rent and food, I'd probably have just bought the lot.
When I was a kid getting into warhammer in the early 2000's someone gave their old stuff to the local RSPCA shop so at one point I had complete boxes of necromuda, space marine, and warhammer quest, with lots of expansions and extras,plus a big stack of old rulebooks including a 1st run rogue trader, but when I thought I was too cool for it all a few years later I sold it to buy music gear.
