Purchase Advice

[MagicWTF]

So my old HackBook Pro finally died (a vastly upgraded Toshiba Satellite A200) after many years of excellent service (MoBo went.) For the first time ever I am in the market for a used Mac laptop, I am in search of any advice you may have to offer, and expectations for what I would expect to pay, my wish list is as follows; I know there are compromises to be made:

 

-at least 1Ghz (CD,C2D, or PPC)

-at least 1 gig of ram (possibly 756 mb-ish)

-a decent battery (at least 1 hour and 40 minutes so it makes it through a lecture.)

-Wifi (I only need b/g no n required)

-decent case condition (scratches are no big deal, but a growing crack could be a problem.)

-Larger sized HDD, I have a lot of music and would like to be able to do some light WoW playing on campus

 

I am mostly interested in Powerbook G4s, iBook G4s, et-cetera. Is it reasonable to expect to find this for under 250$ (I would consider bartering in an iPod touch G1 8gig (MA Series) towards this purchase.) Does anyone have any advice about these lines of computers (good or bad tips welcome,) anything else I should know before buying a somewhat older Mac? Anyone know of a reputable online retailer or, even better, one in the Greater Toronto Area?

 

Does this look like a good deal,I would be doing local pickup, it's a short subway trip away: iBook, Ebay Canada.