I think that the $25k flat fee is very well done. It sends the right signals, and incentivizes companies in the right ways.
1) It implies that their offering is heavily productized. To a hiring company, this implies that quality will be high because they have found a way to scale a solution such that improvements benefit every customer.
2) $25k signals a bias towards higher salaries, where this number can be expected to be below typical recruiter prices. It has the same effect as theladders.com's "$100k+ jobs only" policy, but acts as a natural consequence of economic interest, instead of a gimmicky status ploy.
I think these things are beside the point. People are not products, and thus aren't subject to appeal through opulence. It is conceivable that one would buy a product simply because it is expensive in order to distinguish themselves or satisfy some arbitrary desire to have expensive things, or because they view cost as a factor in "quality." People, on the other hand, are more akin to machines in that their only value to a company is through the utility they provide, and thus money spent on hiring should be minimized so that its returned value can be maximized. The fact that expensive things are alluring doesn't work with exclusively utilitarian commodity goods, like labor. So the fact that the service is expensive won't make it any more appealing to employers. (Or, it might. I don't know what goes through the heads of recruiters. But, a rational actor in their position wouldn't draw your conclusion.) Companies are trying to maximize value, which means minimizing the cost of labor. This includes both the money they pay to their labor and the money they pay for their labor.
Companies are not trying to minimize the cost of labour, they're trying to maximize the return they get on what they pay for labour. So they might decide to get someone for 150k rather than someone for 50k because they think they can get more than triple the value from the 150k guy.
A recruiter that has lots of 150k people on their books can signal that by charging 25% of a 150k salary rather than 25% of a 50k salary. Then people who want 150k people will hopefully come to them.
You can see this if you speak to different recruiters when hiring people, they charge different rates depending on what market segment they target.
1) It implies that their offering is heavily productized. To a hiring company, this implies that quality will be high because they have found a way to scale a solution such that improvements benefit every customer.
2) $25k signals a bias towards higher salaries, where this number can be expected to be below typical recruiter prices. It has the same effect as theladders.com's "$100k+ jobs only" policy, but acts as a natural consequence of economic interest, instead of a gimmicky status ploy.