I think programme prices are coming down unless it's for the pre 1960 ones. I bought a set of programmes when Barnsley were in the Premiership off e-bay about a year ago for £10. The programmes which have gone up in value are the 'Firsts and Lasts' - last at an old ground or from a recently relegated club and the First programme of a match at a new ground.
When I was a nipper, my Dad's mate went to the Leeds 1975 European Cup Semi Final away at Barcelona and the final against Bayern Munich. He gave my dad the programmes and I ended up with them. Sold them last year on ebay, the Barcelona one for £24 and the Bayern Munich one for £44.
It's a strange one, because a game that's meaningless to most people can mean something very special to just one person. Most of my programmes still have the tickets with them too