<<< Is this realistic? >>>

No - not at all. That is, it isn't for Isere, Ain, Drome, Ardeche, Savoie, and H-Sav.

You may get a fixer-upper appartment somewhere for €100K, but I doubt it.

Theres an abandoned semi-derelict 3-bed place with 650sqm of land and no parking near us for €142K, but it needs a new fosse and a roof. Oh, and it nestles in the 'Y' junction of three roads with no pavements, so you'd better like people a lot.