It's been a big thing in the US for a little while now, it's sad to see that it's becoming a thing here too.
The whole idea of cosplay was you do it for love of the character, not monetary gain, but a lot of people have decided to exploit the fact that people like seeing cosplay and charge for it.
Personally I dont think anyone should be paid for their cosplay unless they are promoting the convention, but that's an entirely different thing, that's an actual job.
Just one of many reasons I dont go to conventions anymore, there's no love it's all about money and greed now, even among the supposed "fans".
And yeah, $40 is way too much money to pay to get into what is essentially a shopping center or "in real life" ebay