renovating electric in a fixer upper prewar

Absolutely yes! Price ranges from $500 to $1,000.

i would be glad to give you my insite. upgrading electrical can add major value. there may be corners to cut if you are on a budget. let's get creative. www.studio87.com

More like $4,000+ depending on size of apt. A coop would likely not let you use some guy off craigslist to do your electric work and will require licensed and insured electrician.

Old wiring actually has paper insulation I understand. Many buildings require the electrical be updated as a condition of the board approving an alteration agreement.

Sometimes you'll have to bring additional juice from the basement, and that is a far more expensive undertaking. Try to find out whether this is the case with this particular apartment, though you should probably assume it is if the apartment's in estate/original condition.