Hi lizard,
welcome to AAM. I think those prices are about right. I had a molar extracted (with some extraction stitches) last year and it cost E350, X-rays are about 40 - 50, and the fillings are maybe a little more than normal, but it depends on the tooth and the depth and type of filling. Scale and polish is about E85 when I had it done.
My husband always goes up North to have his done and it is cheaper, but to be honest i am too lazy and if you have to get alot done you could be up the north every week for a long time.
Maybe you should have the impacted tooth done down here (purely for convenience and the risk of any post-op complications) and then look up north and get some prices there for the rest of the work.