I completely understand most of those points you make, except for this one:
"Now consider the fact that Ramjet is a limited exclusive, with a small production run of only 2000 figures made. Economies of scale drives the price up."
Now I can only go on my own thinking but that is a choice made by TT to limit production. I absolutely think he should be a regular non-limited release, especially compared to others like Road Rage and Loud Pedal. This hurts TT because they miss out on more sales and they don't get a cent from overpriced ebay/secondary market sales due to the 'rarity' they caused and hurts fans/collectors at the same time.