We'll call you CA Jeff. The other Jeff was from CA originally but we'll now call him old fart Jeff.
When I ordered my Delta parts last time the tire price was for a full set. At least a few years ago they only sold those in sets since you should replace them all at the same time. Causes tracking problems otherwise. I'm going to check on replacements for both of mine in case they are getting high. If they get too wild on pricing it will be cheaper to replace the saws.