Last year I had make contact with the chap that runs the place in Spain with the 4 rides, I'm guessing it's the same you're referring to, George I think his name is. More or less had dates sorted out but life kinda got in the way and eventually didn't bother, but is it worth the money you ask ??
It's not cheap, but why would it be, it's his business, his bikes, but I would still probably do it though. I have other plans this year for doing trials out in Spain in May and taking in the first Trial GP, again, far from cheap, but so what, money is for spending I guess.