I am using Sedo for my domain parking but seems they not offer me good PPC.
e.g. for 53 Clicks they give me €4.45. Is this good or Bad?

Any good parking service provider you recommend? who offer me good PPC also.

I've made the most money with GoldKey.com. I went backto Sedo for now but althugh I get way more traffic with Sedo I get barely any click.

Looks ok from where I'm sitting :( Unless it's a mesotheliomia domain.

It depends on the category of domain and how many domains you have. With only a few domains, your choices are a bit limited. Goldkey is one option. I think NameDrive also (which I've not used but gets good comments). Sedo. Afternic (where you can select between a couple of ppc companies who pay well but insist on a portfolio of names if you sign-up direct).