Here's my two cents.
1.) I got back into collecting TS back in 2000. A KC Grunt was priced at $20 a pop (in squads of 4). Today, on average, the typical foot soldier is $30. That is a 50% price increase over ten years. In comparison, my salary in 2000 is 1/3 of what it is today- not to be arrogant- it was really the result of a couple lucky promotions and lot's of brown nosing
Some of you have mentioned the DDay landing craft from KC. I am looking at my sales receipt for my DD12 that I bought From Stockade MIniatures. I paid $125 plus tax. That is a 22% increase over ten years- that isn't unrealistic imo. If the price of the landing craft were to have followed my salary, then it would be in the $450 range!!
2.) All the toy soldier companies across the board have done a great job of leveraging technology to increase quality and minimize the cost of production. A shining example of that is The Collectors Showcase and, to a lesser extent, First Legion.
3.) All companies, whether in the service or manufacturing industry set price to generate some level of sales revenue. Typically, that includes covering their fixed costs (those costs that don't change whether they make 1 or 1,000 units- like rent), variable costs (labor, materials, used to make 1 unit) and a healty profit. Most of these manufacturers produce in the PRC so the demand for things like material and labor has increased which had led to a price increase. However, I think, and I am speculating here, that these companies, due to their concentration in the PRC, are creating an artificial cost ceiling for materials and labor used in the production of Toy soldiers.
4.) The EBay factor- let's face it- these business men are savvy folks. If I am a manufacturer and I keep seeing my sets selling for scores more on the secondary market than they were priced at retail then perhaps there is something wrong with my market demographics and I could conceivably bump my prices moderately.
Take the following example- say a typical foot soldier cost $25. I decide arbitrarily to bump my new batch of footies to $27/pop. I apply the $2 increase to ten footies and produce 2,000 units of each footie. Therefore, by bumping my price $2/figure, I essentially increase my revenue $4k (2,000x $2) Now, multiply that $4,000 over 10 figures in a range, I now have $40,000. Now multiply that $40,000 over the ten ranges I produce (WW1, WW2, Petticoats, US Navy, zulus, etc) I now have $400k more revenue and minimal cost increase as I haven't really done anything more manufacturing wise than raise the price. Not saying that is what is going on but I am trying to illustrate how a marginal increase on a per unit basis can impact a bottom line in a big way.
5.) The "Accordian" effect of cost sharing- ok- the more units a manufacturer produces, the more items he has to spread his fixed costs (utilities, rent, etc) over. This is accomplished in one of two ways:
a.) the company increases the amount of items produced- still sell a figure at $25/pop but produce 3,000 units instead of 1,000. This can be risky as the manufacturer has to hope he can sell those additional 2,000 units.
b.) increase the amount of lines available to collectors. Keep production at 1,000 units each. The manufacturer is taking a risk hoping that the new line is a hit and they can sell enough units to spread the costs.
The big guys- Britains and KC, appear to understand this and I believe they are, whether they intended to or not, more in line with option b- it's more fun I think that way anyway because you get to play around with a variety of historical periods.
In short, I continue to spend more each year and have no plans on slowing down. The collector and manufacturer are playing a game of cat and mouse- at the end of the day, the collector is paying for "quality" - whatever the collector perceives quality to be- proper uniforms, artistic painting, the figure has two arms instead of three, etc

. So long as we are sold on "quality" then we will happily or begrudingly-part with our money.
Cheers
CC CPA
