LOL - Bird, I was gonna add to my first post "depends on how bad you need it".
yes, they are not cheap - but - they are the only game in town.
I needed 3 for my pre-1960 Johnsons (I have 5 of them) and Pappy needed a couple also.
so we ended up buying 5 or so for a boat load of coins.
When refurbishing an old vintage motor, if you gonna have a nice paint job
you can not have a raggedy cowl gasket ....... thus, forking out the $$$$
If you need parts, Marine Engine has most everything you will ever need.
But, once you cross the age line, a lot of parts are "no longer available".
This is the Cross to Bear if you gonna maintain a nice vintage motor.
https://www.marineengine.com/parts/parts.php
One of the best websites available is https://www.aomci.org - visit the "ask a member"
section if you are having issues with your vintage motors.
Note: IF you decide to purchase the gasket, make tripple sure you cut it
about an inch longer than you need and force the cowl down over it and let it
sit for a few days to acclimate - then, trim and glue it in place with contact cement.
jus my Dos Centavos
.