I had mine in a box in my parents attic for years. They were a set of the original Episode 1 figures from TRU's midnight launch with a certificate for being a part of said launch. My sister and I went because it looked to be fun and this was before the debacle it would become. I didn't buy them with signs of $$$ in my head though, I bought them as a fan.
Last year I dug them out and put them out at a yard sale for $2 each. I was glad to be done with them. If anything I kind of sort of regret selling my packaged original figures from the 80's a couple years ago, but they two had been boxed up for years and aren't doing anything for me. No room for this stuff and I bought myself a nice gaming PC with the cash I made.
What people are failing to understand is that the reason the older toys are worth some money is because back then I and all the other kids actually tore the packaging apart and played with these things, not stash them away with a collector mentality. Finding prestine and even packaged ones are much harder due to that so therefore after 30+ years you are going to see some apparent collectible value. If anything the older LOOSE toys are WAY overpriced IMO on the secondary market because they made billions of them and even good specimens are pretty common to this day. The weapons on the other hand...hehe
The prequel toys and the stuff from today? The majority of it is packaged rather than opened because of the "OMG These are gonna be worth a fortune later!" so you now have an opposite effect. That's fine...I hope these people choke on it and perhaps learn their lesson.