We have double front doors and sidelights with double-glazing (perhaps
30 years old), but one sidelight is the only one without signs of
leakage. In addition, most of the external hard plastic rims that hold
the glass in the door are cracked.

The manufacturer (http://www.peasedoors.com) is still in business and
sells replacement glass assemblies and rims as sets, but they seem
expensive: $249 for each of the doors and $173 for each of the
sidelights; this is for glass with a pattern similar to what we have now
but not identical; our pattern seems to be no longer available.
Unpatterned glass or glass with a simpler pattern would be cheaper;
e.g., $159 and $89 respectively for plain glass. But maybe I am out of
touch with prices; perhaps the prices are not outrageous: the
double-glazing assemblies in the doors are 22" wide x 64" high, those in
the sidelights 7" wide x 64" high.

Pease does sell the rims separately but claims that a rim-and-glass set
is not much more expensive than the rim alone. I do not have prices for
the rims separately, however, so I don't know what the real difference is.

OK, here's the question: assuming that the rims on their own are not
outrageously expensive, how satisfactory might it be to

(a) buy suitable double-glazing assemblies locally? -- but either plain
glass or a different pattern.

or

(b) get the current double-glazing assemblies rebuilt locally, thus
retaining the pattern?

Perce