If you're going to be doing a lot of tinkering, you should also become familiar with The Miracle of Buying Stuff SurplusTM
Like a similar LCD
and header pins
for less than half the price. Now, there's a good chance that the reason the LCD is surplus is that it's an older model, with contrast that's not quite as good as the one from Digi-Key, and backlighting LEDs that aren't as bright. But that's not always true: quite often you get stuff that's current, purchased from someone who made a bad guess about What The People Want and went belly-up.
A few other excellent dealers, who've been in business for many years, are Alltronics
, All Electronics
, Electronic Goldmine
, and Marlin P Jones
. Another really fun place to shop for odd mechanical bits and materials is American Science and Surplus
: even if you never buy anything from them, the catalog is a hoot to read.
This really ought to be in a FAQ somewhere.