Yeah I don't think there's anything wrong with an occasional bump, especially if there was discussion of a pending sale and then that fell through. I agree though, if it's been this long and bumped this many times, it's pretty clear that nobody here is interested. As I mentioned quite some time ago, the buy/sell section on this forum is not really very active and most people seem to be looking for bargains on professional gear. I think this suitcase lab thing is pretty cool but it's not something I personally have any use for, the asking price may be fair but I would not consider it a bargain, I doubt a professional engineer is going to want it, but it could be a handy thing for a kid or hobbyist. It's big and bulky though so shipping is going to be expensive unless you can find a local buyer.
Ebay is much more likely to lead to a sale of something esoteric like this due to the enormous audience, or even craigslist since that will cater to local buyers who can pick it up. Members of this forum are spread all over the world and the cost of international shipping is going to immediately exclude anyone outside of the USA. Pulling a number out of the air I would guess there are probably only around 10 active members here in a given geographical location.