It all depends on what they are offering to pay you. I was a dispatcher at Luton 10 years ago. Its is quite a tough job with all of the paperwork as you say, but nice to see how the big machine works. I only lasted 5 months though.
I would be more concerned with parting with cash for a flying job that gives a limited amount of flight pay. 20,000E is quite a wack (almost 737 money) to fly biz jets. For that outlay, I would want a return of at least £35,000 and you won't see half that as a first job in the biz world.
The troulbe is, all companies are trying it on with paying for TR and they need pilots. As before with so many threads, if we all chose to stick together and not pay, what choice would they have?
What is the market like in France these days for Regoinal TP jobs?
King Air TR £4000 in the US, and I bet you would earn the same flying that than a Citation, for example.