I checked all of the parts for the slider rebuild that
@red66toy listed in post #52 of this thread, and they all seem to be still available from Toyota in the US for about $150 for the whole BOM.
The "bailey channel" or dual channel weather stripping seems a little harder to source:
*
Bailey Channel (P/N 350.117) @ Scott's Old Auto Rubber in AU, unknown price/availability (I haven't contacted yet)
* CR Laurence
CRL 1-3/16" x 7/16" Unbeaded Flexible Double Glass Run Channel (P/N 21414301911), only seems available in 100/200ft rolls, some retail availability for about $380/100ft, could not find a cut-to-length source.
* Fairchild
Unbeaded All Rubber Flexible Flocked Rubber Channel Height 15/32"; Width 1 1/16"; 2 Openings each 3/16" to 7/32" {8 ft}, $24/8ft cut length from Rock Auto, currently in stock as of 2022-09.
Thanks! Does the dual channel weatherstripping not go all the way around the window? I just measured my (non-slider) rear windows and they're about 100in all the way around, not 100cm?