pass lab owners: can i afford one?

not to buy it - to run it! i just read an old stereophile review of an aleph, and the reviewer said his electric bill went up 40% (gulp) after he got it? can that be right? i have found in the past that the cost of running something involves more than just the rated watts (getting a two hundred dollar increase after running a space heater one winter showed me that). could some pass owners give me an idea of how much of an increase they saw in their electric bills (please not "a lot", in dollars or even a percentage to your best guess). thanx, mike