the car looks the same

even Ti QV? it has Ti interior upholstery, but the engine was converted to 1 carb from Lada))Poor condition? 150 - 750 euro I suppose, depending how poor it is... Better find one that is a bit better. A series 3 is not that rare. They are getting more expensive though!
the car is for sale for 700 euro, but it need a lot of work: windscreen is broken, back window is broken, sills and arches are rustyYou can buy a good drivable TI QV from 1500 - 4500 euro. Starting price should be low, otherwise it is not economical wise to restore it. On the other hand, realisticly it almost never is econmical wise to completely restore an Alfasud, because of the low selling price and high restoration costs.