We have 2 x Parker Knoll style 'armchairs' that the people we bought the house off of left us (like 'tub chairs' - don't have the winged sides/padded arms of some Parker Knoll.) They have lived in the conservatory for the last few years looking old and tired and being ripped to shreds by the cats. 
With DC1 on the way, I would really like a chair to go in the nursery that I can feed in but in their present condition, these ones are just too manky. However, money is tight and I would really cannot spend loads on something new / want to get something cheap that I hate if I can revamp these ones.
Any rough ideas how much they might cost to reupholster?