I’m very interested about your solution.
I’m french, so please don’t care about some mistakes I’ll make.

I’ve one question.

I've to create a website gathering event, free or not, proposed by announcer.
Each announcer will have to pay for publish, with different solution in different prices.
So it means the possibility to create different form with customized fields, linked with an online payement (PayPal surely) when checking out.
I join a diagram to explain better.

Is it possible with your solution ?

I hope you’ll understand my request.
Have a nice day, happy new year and hope to read you soon !