I got one of the original Canadian-made copies of TP, before it was licensed and published/distributed by Hasbro in the US. I have no idea where it is now, and it's not in good enough condition to make any collectibility alarm bells go off... but if it were in better shape, it'd probably be worth something.

TP had a brief fire-brush craze here in the early eighties, and our highschool Reach For The Top (nerdy inter-highschool quiz game) team used to use the set for quick question practice. After a few years, the bloom went off the rose, and did little more than leave us all with some ridiculously garbagey bits of knowledge clattering around in our minds (for example, how many golf balls there are on the moon).