CPI Multiplier One surfer asked me how much a $2.50 milk shake would have
cost back in 1958. Well, after I shuddered at the thought of
paying $2.50 for a milkshake, I went to find the CPI data sitting
on the Labor Bureau's web site. And I thought this was kind
of neat so I whipped up a little calculator to compare prices
over the years using the government's statistics (hey, you paid
for them!)