The USPS is raising rates again, or at least proposing it. I have very specific plans for when I’m appointed Postmaster General. But until then, I’ll just try to determine if the Forever Stamps are a good investment. =RATE($A3-$A$2,0,-B$2,B3)*365
RATE(nper,pmt,pv,fv,type,guess)
nper = the number of days between 7/7/10 and 5/14/07
pmt = no payment
pv = if you [...] Read More...