Hi elvis, your english is A1, make sure it Doesn't have any finance on it etc,,,,,,,,over here it would be called PHI or something similar.
Before you purchase it ask the seller what modifications, updates etc.
If it's a private purchase take a mate that knows about machines and both of you give it a rigorous going over, bearings, running gear and it's ability to do what it claims to.
No doubt if you spend enough time searching though the appropriate section on here you'll be able to read all the pitfalls, but seeing as your a Norwegian I'm sure some really helpful info will come your way before the 17th.
Good luck mucker and if the one your looking at on Wednesday doesn't work out, keep looking................they're more than worth the effort. :yes :thumbup