Price yes, search time unlikely. I use AirBnb, and the system is that you contact (usually a few) properties to check their availability (not all properties hav

Price yes, search time unlikely. I use AirBnb, and the system is that you contact (usually a few) properties to check their availability (not all properties have up-to-date availabilities on the website). They reply confirming availability, and you reply confirming your booking. In my experience this usually takes a day or two. I can find and book a reasonably priced (i.e., none too luxurious) hotel room in NYC in about 15 minutes, in comparison. AirBnb's system is relatively hassle-free, but time savings against Kayak/Expedia/Hipmunk? Not a chance.