Fuel economy was ranked 332 in my list of reasons to buy.
Call them lame, but the main reasons I wanted/want mine are that the Epic is:
1) unique in a million ways, including the fact that it's the only boat made by an auto manufacturer
2) it's a TOYOTA, which connotes to me that it's built with very good attention to detail (it's not perfect, but really good)
3) the interior layout of the v-drive is just as clean as boats come
4) the engine is a work of art and I expect it to run strong for 20 years at 50 hours per year
5) it was just a ton of boat for the $27K I paid - like new even at 130 hours - a perfect specimine
Since then there have been things I've learned that are negative and things that are positive. I for one would probably do the whole thing over again. My friend has an '03 Centurion Avalanche that's got some real plusses: holds speed better with the 350 Magnum, the stock wake has more pop, it's got snap-in carpeting, it's still under warranty, there's a dealer down the street, it gets pretty good gas mileage and looks real nice. They bought theirs new in '03 when I bought mine and paid around $40K, and to this day, I think I'd still prefer our S22 than the Avalanche, despite all those factors like dealers, warranty, torque, newness, etc.
For me, the fuel ecomony is the one factor that keeps me at ease regarding the small displacement of the engine - it's harder to hold speed without PP and you can't put more than 3K in there with the stock prop. Neither of those are real big deals, but for me, when I do the math and find that we burned 3.75 GPH again, I think to myself, "well, that's your reward for the extra throttle work."