Who did the work? Anyone who knows the 4G63 knows the water pump gets replaced with the timing belt if it has any substantial mileage on it. If the pump is leaking and didn't get replaced with the belt, that was a mistake on someone's part (either the shop or the customer...or both).
Aside from a new water pump, the other thing I don't see on the ticket is a new hydraulic timing belt tensioner. I suppose that could have been included with the pulleys, but it doesn't explicitly say so. Judging by that ticket, they definitely didn't throw one in for free, so something to think about...
I just feel sorry for whoever paid for all that sh*t. This really goes to show how much you actually save doing repairs yourself, and also how much shops mark up parts. $4.25 for an NGK sparkplug /ubbthreads/images/graemlins/uhh.gif
First thing I would probably do is pull the plugs and make sure someone didn't put any iridium sh*t in there. Most of the time you can get a set of BPR6ES copper cores for just over a buck a piece, which is what should always be in a fairly stock 4G63 IMO.