I have been heavily searching for tires and ended up settling with Hankook AH12 H load rating to replace my aged Michies.
Anyways, I could not easily find prices online on any of tires but ended up a finding a list tire prices on a webpage.
I am not trying to advertise this website but within in which in this particular page, I have used it to see prices and some specifications on hundreds of tires in 11R22.5 (near equivalent to 295/80r22.5).
Here is the link.
Those who are looking you can use to get a ball park figure this will be a great resource. The website just doesn't sell a 11r22.5s. Other sizes are sold but I am just including a page of 11R22.5s and be prepared to be surprised to see how many different models and brand names of tires it will list.
Just thought I'd share.