I think it will continue to be bad or just above the vendor price. The vendor price acts as sort of a price floor, and we are reaching it. Which means there is still more supply than demand on certain items. One thing I think that helps keep supply high is being out in the wild, and not having a nearby vendor. With a full inventory, it makes sense then to put an item on the TP.
The only thing that will rectify this would be a decrease in the supply of items or an increase in the demand for the items. Either way I think the solution would probably be worse than the problem itself. Enjoy the cheap gear in the meantime.