About 4 years ago, we had an attorney that was all set to put in those "4-line" phones. In fact, he went to Staples and bought them, but the particular set didn't have voice mail, and he didn't have any wiring in the building :-)
We converted it into a Panasonic system sale with voice mail and he's had no problems with it at all. I think they were about $150 (that could be either 130 or 170) average per set. Not only did he get his phones and network installed, he also got call accounting to reconcile his time in the price. Sure, it was more money, but he got a lot more features.
