I have a 360 round unopened can of this stuff in chargers, in bandoliers. I have an asking price on the can of $400. Everyone wants to open the can to see what it looks like inside. I tell them it will cost them $400 to open it. One guy at a show had to be asked to leave because he insisted on trying to open it.
Now, the whole package is cheap for what you get. The can still has the original stickers on it and is dated 1945. It was manufactured by Radway Green.
Pretty historical stuff. It's the last of half a pallet of a lot I bought back in mid 1970.
Everyone, wants to shoot this stuff, so they offer $200-$300 for the can. It's getting closer to my asking price, so I will have to put up the price on the can. It is after all a great magnet to my tables at gun shows.
Any self respecting shooter should have a 48 round, unopened package of 303Brit to go along with his/her rifles. More serious collectors, need a crate or an unopened can. Even if it's only used as a prop to hold a door open.
I've seen the 48 round boxes, depending on condition, go for an average of $35 for almost pristine down to $25 with ratty boxes. It all depends on the show.
Recently, I talked to a fellow that "says" he shoots over 500 rounds of surplus per year. None of which he's paid more than 30 cents a round for. I asked him when he last bought ammo. He said, 10 years ago, because he can't find any with decent prices any more. His shooting days are numbered.