Back before we got our "permanent" stamps here and postage went up I'd go to the PO
and get the exact number I needed to top off what I had in old stamps.
Actually I remember when the GST (Goods and Services Tax) came in I bought a bunch
of stamps the month before it came into effect to get them without paying GST. Of course
the postage rate went up Jan. 1st so I had to top them up. For the next 3 or 4 years until
I used them up I'd go buy 6¢ worth of small stamps at a time so I could buy _those_
without paying GST because that was the maximum I could buy and have the tax round
down to 0¢ rather than up to 1¢.

Yes, I had a lot of time on my hands, this was 5-6
years before I had internet. ^_-
Also had to top up for the difference when mailing to the U.S., now I have to buy a stamp
specifically for that as the "P" stamps aren't eligable for topping up for the difference so
I can't keep an assortment of stamps on hand to assmble into what's needed. Of course
I send a lot fewer letters nowadays anyways since the outbound portion of a mail order
transaction is submitted online with a debit or credit card nowadays. Only really have to
mail a check/cash if it's with annother individual and I haven't done that in quite a while.
If the U.S. Post Office needs some extra cash they have some interesting assets they could
sell off or rent out:
http://whois.arin.net/rest/net/NET-56-0-0-0-1/pfthttp://whois.arin.net/rest/net/NET-192-102-241-0-1.htmlThe class A is a bit on the big side unless you are a major internet provider, however even
that class C could be handy for a small organization that needs to multi-home their network.
Ironically these are some of the most underused IP blocks around because although
usps.gov is hosted in their class A, usps.com is hosted on an outsource provider,
plus they seem to have a whole bunch of addresses reassigned to them from AT&T,
NASA, other organizations instead of just using the addresses in their own blocks.