The poles spent Many years making heapslook Good, crashed cars from germany were repaired in the milions.
So plenty of professional bodgers. A polish MOT means nothing at all.
Sadly the car as a polish LHD car with so much welding needed is not really worth a lot. I would guess the inner wings are gone too as they did very often on the newer cars as well

The people bringing these cars over should be shot. Very often they buy a cheap 126 arrange papers and use it to drive to the UK. Then sell on Ebay on online to pay for the fuel n a bit of profit.
I really feel for you. Buy a car with a British mot.
Don't give up though t,hey are great cars.