Is it really the case, that BS collectors/buyers are so many more than 3.75? Really curious what people in the US think or see. Of course it is more of a nostalgia driven collectors market, but I think a lot of the differences between the lines is by intention by Hasbro. I understand that the repacks will keep the line alive as new collectors also want to have the main characters and not only skiff guards that no one else knows beside us. I think most is driven by the fact, that Hasbro has 2 main Star Wars lines that compete witch each other and they decided to mainly go for 6". The other one is then the niche market with lower production numbers. They know they cannot let 3.75 go completely as they might lose devoted collectors and that might affect also the 6" line on the longer run. So to keep us on board, they run the 3.75 line on a base mode, and sprinkle in here or there a few fan items. They probably also see us as a niche market willing to pay higher prices (just look at the aftermarket), so they put prices like for Slave 1 not based on real production costs, but on evaluated possible market prices they could ask for.
I can tell you that TVC for most countries in Europe (Like here in Greece) is only possible through online or amazon.de / .it / .com. But, Black series no issues.
TVC is certainly shrinking into a limited market.