They're also quite provocative. Once every few years I'll break out my very, very old "power nine" deck and play with it at the local game store. All games stop. Everyone comes to look. People take pictures.
The cards were not that expensive when I bought them in 1994/1995 ...
Where's a good place to sell these? Ebay?
But yes, there is a lot of speculation on Magic cards. And older cards are now VERY expensive.
Also consider that if you did want to sell, selling to a store drastically cuts value. Individual sales aren't without their share of problems either.
I'm heavily involved in MTG, so if you did have further questions feel free to reach out.
I couple of years ago, i found some old random magic cards from like revised with some dual lands and tossed it because I thought that they were still worth like $10 a piece.. turns out I threw away like $1500 worth of cards :(
My original collection was stolen in 1995 and would be worth as much as McMansion today. At the time it was worth about $5000.
I sold it to my cousin for $75, which was cheap because I was doing him a favor, and he never paid me.
[Edit] Thanks a lot to everyone who answered!