futurlec.com has huge 1" high 16-segment displays for $1.50 each. These are high-brightness red and common-cathode.

This is by far the cheapest low-volume price I have seen.

Here's a translation of the kingbright display segments to the pins on the futurlec display:
a=2
b=22
c=4
d=9
e=14
f=10
g=16
h=21
k=3
m=24
n=23
p=19
r=15
s=12
t=11
u=7

Those are nice looking. It's part number 14SR10013AS (not in stock right now).

If you are using these, there are two things you should be aware of. First, since the pinout is different, you cannot use the standard (PCB-free) assembly instructions-- you'll almost certainly need a printed circuit board or a protoboard for this. Second, the brightness is different, you may want to play with the relative duty cycle in the code.

-Windell.