What is this Thomas Set?

I think, for instance, the Sir Handel value has been established as "thee" high market price...no one has listed any for a lower price anywhere, which suggests with the absence of any other listings, that they truly are very rare bnib.
I money was no issue I would buy one, but I am forced to wait for the person who is either willing to sell one for less immediately, or stumble upon a seller who doesn't know the value of what they are selling...so far unfortunately, I have not come across that seller.