There's a "collectors" shop in Scarborough that has a load of late 70s and 80's Marvel stuff, yet as with all these kinds of shops they think all these comics are actually worth a lot more than they really are.
Was that the book shop off the main street? All I remember them having was Death Of Superman stuff and 80s Moon Knight.
Market Vaults in Scarborough can be a good place for bargains sometimes though, few years ago I got 6 or so 60's Amazing Spider-Man issues for £3.50 the lot, not in the best of condition but they are amongst the pride of my collection.