The price seems to be about double what I would expect.
The following link is for new replacement woofers and for re-foaming look @ Miller Sound and another speaker rebuild company in Orange County, CA (I'll look up their site as the name changed when longtime employees continued the business after the owner retired).
This said, I realize that shipping costs have become extremely elevated as of late.
https://www.simplyspeakers.com/advent-replacement-woofer-p001-31858.html
DeKay

