Sad news...Polaroid will be discontinuing Type 80 films in the last three months of the year. I love Type 87, so I guess I'll have to stock up. The other option is to buy expired film. Buying expired Polaroid is a bit of a crapshoot. It dries out after a period of time, depending on how it was stored. Five year old film can be bone dry, and 30 year old film will still have working developer. It also tends to not be cheap (not usually as expensive as new Polaroid, but still enough that one can be unsure of spending cash on what may amount to a nice display box).
The attraction of expired Polaroid, at the same time, is it's unpredictability. The chemistry is different, which already creates different tones that of current Polaroids. Couple this with old film and old developer and yoy can get some truly fantastic results. These pictures were shot with my modified Square Shooter and Type 88, expired 9/96.
Skorj also has some nice examples of expired film on his flickr site.