ummm... I think you are one of those high end collectors?
From what I have seen over the years your collection is amazaballs and all high end stuff.
You are right that there is a whole separate market for the rare and uber rare stuff. I do think the market has spoken pretty clearly based on past sales that 12.5-15k is what you should expect to get.
If you want to compare to other rare stuff you have Alien and MG from recent history. MG has fewer made. Alien has more made.
TBL has the benefit of being P-roc which is a detriment to the others for perceived conductibility/reliability long term.
MG is just a show piece for the collectors of the uber rare and the drama story. I would put it in a different category from TBL and Alien (i.e. it is a crap game but more collectible due to very limited numbers and original sale price pushed the secondary higher)
I think reality is that both Alien and TBL are similar reliability long term and any experienced tech will have no problem keeping them running ling term.
TBL has been frozen in time codewise but Alien got polish. In both cases there are examples of games that are lemons and games that play fine (like yours)
I do think the currently unknown status of both (and 40 already built TBL in storage) will prevent some huge price spike. Either game could be made in great numbers (and a better build iteration) in the future.
Time will tell but given the recency of TBL build, I dont see any major jump coming. It will creep over time, but I dont think the price just jumped 5k due to the recent news. If we are honest, most of us assume they were dead years ago and no more would make it out the door.
It does not play very well and was just made recently. BBB only sells for 17k+ because of its age combined with rarity.
Give TBL 10 years and it could creep up.
TBL needs to change hands a few more times before more get locked down in hard core collector hands.