Good LUCK ya'll! I'd be discouraged. I have attached a snip of an auction spreadsheet from Oct 17, 2015 Tron and Creature had the biggest gains. You'll see the Pinside high & low from last Oct.
Today's Pinside Values:
Demolition Man $2130 - $2470
Jurassic Park $2220 - $2580
Spiderman $4990 - $5810
Playboy $2030 - $2370
Teenage Mutant Ninja Turtles $1200 - $1400
Comet $830 - $970
Revenge from Mars $2680 - $3120
Attack from Mars $7030 - $8170
Tron Pro - New in Box $5730 - $6670
Transformers LE - New in Box $4530 - $5270
Who Dunnit $2400 - $2800
Creature Black Lagoon $4350 - $5050
If these increases keep up, in 5 years Demolition Man will be worth close to $5K lol