There's quite a market for old film for "lomography" but I think the seller of the FP4 is being rather greedy in their pricing. Over the last 35 years I seem to have accumulated an amazing collection of odds & ends in films, usually the last few of various "bricks" of film. Realistically I'm never going to use them all, so I often put little batches on ebay but start them at a low price. That way I'm at least getting back a little bit of the money I spent on those films years ago! People seem satisfied as I get a lot of repeat buyers.