Thanks for the reply. Date is Friday March 2, 2 star hotel in Birch Run, MI. Tax rate in MI is 6%. We have used Name Your Own Price in Michigan, Illinois, Ontario (13% tax rate) a lot, and the Taxes & Service Fees always hovered around 18%, that was pretty consistent with all my past bookings. When inquiring with Priceline, they simply referred me to their standard jargon. When I "recruit" friends to Name Your Own Price, I would advise that they should count on adding an extra 18% or so...perhaps that's not accurate and it varies up to 31% or even higher! Other than State or Provincial Sales Tax, I don't know what the other factors are...