I think it all depends on what you are looking for and who else is bidding! Toy Soldiers accross the board still seem pretty strong to me. I have seen a PM 1 Napoleon go for $425 this year as a single figure. I have seen a Mussolini Staff Car set sell for $550. I have seen the original WS15 Tigert Tank still bring 500 plus. The Winter Tiger still commands regular upper $400s. Another example is original Arnhem and Vietnam, put them up there and watch out!
I think what you are not seeing is the recent retirements jump through the roof in value like the older stuff. The older stuff is still pretty strong. As for WS41, who knows, it is a real hard set to find Mint in the Box. A lot I looked at over the years were damaged or missing figures.
I think any given day still applies to ebay, you can still find real bargains too!
Just don't start collecting Trophy of Wales unless you are really prepared for sticker shock! What most collectors fail to remember on these is that they were very expensive at retail when they were originally sold!
TD