I bought a 1988 speckled Data for $35 about 20 years ago. It is now worth about $15 to $20.
There was a malfunction in the spraying of some of the Data face's that made them more desirable as collectables. The unspeckled ones go for $3. The problem is, you need to find someone who wants one. I did not buy any of those furry collectables (can't remember the name even...oh yes beanie babies) so I am stupid but not that stupid. Besides I like Data. Anyone want a $50 Speckled Data. I will write a nice blog about you. Lynda?
OOPS! Made a really bad decision didn't I? Lesson learned: Don't invest like I invest.