Brother, they do not adjust your doors for more than scrap price, so you should not consider that while buying.... another thing is, you first check what is wrong with your doors and what you want to replace. If your doors are not rusted or sprayed again and again with poteen, you might need only changing the interior poshish or glass may be......
Your B13 meter with RPM comes in Rs. 3000 for a very clean piece to my liking 