Hi Rich as with all price guides and remember that is all that they are
you will find lots of variations of prices in all of them and with hard
to come by chips they are most often close. And I hear people say they only
purchase or go by one or the other as their bible, well if you use that
as your line of thought you may as well stick your head in the sand and
buy and sell! As for the Guides I dont use either as a Bible because the
Rack I find all to often well off the mark on Northern chips and the
Official I find they are somewhat to too high on the South end of the state.

Just my opinion,if I had to pack one around with me I would rather
pack a notebook rather than the Physician desk reference with me.