too many variables involved to answer that question
the agency has Irish owners.
That explains everything, just kidding, but they are too dodgy to deal with.
My general rule is if you smell something fishy don't deal with them, of course this depends after all you are buying the house not the agent. I know I just contradicted myself but it all depends on the circumstances. 165,000zl. does sound cheap but where is it and what kind of houses is it?
Polish people do not buy trust the British seller, they know he wants to make money, It is far cheaper to buy land and build yourself.
This is the old view, buy land or get given it by your parents, first five years put in foundations then put up walls then put on roof then leave to Ireland or Britain and basically finish your house over the next 20 years and do not trust westerners, they want to make money?
My opinion, for what it is worth, is Polish homes have stabilized and in the long term will go up for the reasons stated on this thread. But the stabilization means trouble for builders and developers on new builds. The prices of labour is going up a lot, the price of materials too but also buyers are not as naive as they used to be. Buyers expect more for their money, rightfully so.
I have just recently checked out my competition and their two story houses have no stairs in them!. And there seems to be so many rip off merchants it is ridiculas.
Also finishing the house, developer standard open/closed is soon going to be a thing of the past. And finishing ground works, simple things like trees, fences and grass.
For people selling their old house I see a tendency that sellers see their next door neighbour selling for 5,000 per square metre (for a 110 m2 house), so they assume there 300m2 house is worth 1500000 Zl (not to mention the the difference in finish) and leave it on the market for years, no body buys these and people feel the market has crashed. Small manageable houses still sell.
Guess who is building smaller manageable houses then, lol.
Best of luck to you Tosca.