2 new in the box Rival Audio R176-P-08 Carbon/Pulp Woofers
List price - $159 each
$130 for both drivers plus Paypal & shipping costs (ship to CONUS only)
Reference
https://rhythmaudiodesign.com/products/r176-p-08-carbon-pulp for driver specs
This woofer is used in several DIY speaker designs (such as the Ben Shaffer designed Fenrir and the Javad Shadzi designed Rivalries) both described on the site above.
Time to build some new speakers! Thanks for looking.