I am looking for long-term parking at Newark for nine days. Met someone at a group dinner tonight who recommended ewrparking.net. They're $14.99/day plus $10 in semi-bogus fee and fuel surcharge and 15% tax, but it seems like they are cheaper than other alternatives I've found. Are there any other options that are cheaper but still convenient to the airport? There was an old thread here, but it hasn't been updated in years.

Updated to say that I've checked several other places and $15 plus fees and tax seems to be the best of the rates (some are higher), comes out to $160-170 for the nine days. I can actually rent from Hertz in both directions using my corporate retiree rate for around $125, which is less than I'm looking at for parking. A minor hassle is that I'd have to find cheap gas to refill the car before dropping it off at EWR, but apparently there's a Wawa that's not too far out of the way.