Budget:about 150€ (200$)
Location: Europe, but I don't mind getting from US, as long as there is a 220v version
Can you give the actual country (would help with eBay)?
And does that figure have to cover postage & VAT?
For used, you could look for brands such as Weller, Ersa, JBC, OKi/Metcal (these aren't temp adjustable; temp is set by the tip), Pace, and Hakko. Just make sure they have all the parts (power + iron at a minimum, and that tips are still available). Some of the old Weller or Ungar could be a problem for example, as the parts & tips have been discontinued for some models.
IF you buy a station from the US, it's almost certainly going to be 120V. Possible to use in 220V countries, but would either need to be modified with a 220V transformer, or use a step-down transformer. Not horribly expensive, but it does add a little additional cost and consumes space.