Spandex Masher, et al.,
I have previously given that question a great deal of thinking when it comes to principle vs. reality. In my point of view, no, I would not pay for another type rating, at least not up front, perhaps in the form of a training bond.
With 500 and some hours mainly SE prop, if I was in charge of recruiting, I cannot say that I would have hired myself even, spent tens of thousands of EUR/GBP to train myself and then see how I would have turned out. With a couple or thousands of hours on the 737, good sim sessions and line checks, I believe that I have proven that I´m up for the challenge. And since I now meet the requirement for airlines that do not charge directly for a type rating, I do not see the need for future type rating costs. Some draw the line between initial training and a TR. I have drawn the line after my first TR.