i wouldn't buy that stove from him you can make that thing for about 5 bucks if you were to go out an buy a rockstar twist off top can and have a gas stove at your house. use this link if you're interested.
http://www.youtube.com/watch?v=PEEWqA3LC80
I made one and it turned out pretty well on the first try. make sure you flatten the top edge really well though.
The Rockstar stove would serve you well if you're using it to boil water or maybe cook ramen/something pretty simple.
One thing i would recommend you consider however is the amount of fuel you're going to need if you go with an alcohol stove. In my experience you always end up using about 20% more alcohol than you expect on those long trips (1-2weeks).
I dont know if youve looked into anything like this but for extended trips i sometimes use my J faulk stove, runs on twigs and can be used pretty well to cook things on.
http://www.backpacking.net/makegear/falk-woodstove/index.html
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Modern civilized man, sated with artificialities and luxury, were wont, when he returns to the primeval mountains, to find among their caves his prehistoric brother, alive and unchanged. -Guido Rey