I paid around GBP100 for a mixed bunch of Imperial spanners and (3/8 & 1/4 drive) sockets, including a couple of ratchets and an aluminium tool box. All Snap-on or Craftsman.
I'd already got an ancient Britool 3/8 set with Imperial but there were some really handy deep sockets in the load I bought.
Unfortunately none of the spanners are as big as yours, but saying that you just can't find them here so I grabbed what was offered. EVERYTHING available here is metric (except stuff on the Range Rover!)
Cheers guys, found a home for these. Mentioned to my Dad I'd dug them out, turns out his '86 Case tractor is made out of big imperial nuts and bolts, and most things on his farm too. It's nice that they're going to see some more action tbh.