I recently bought a "new" Dunlop 13" tire for my DT 300i on ebay from Chapparal for a very low price ($40).
The mechanic who mounted it told me why it was so cheap: it was manufactured 3.5 years ago! I didn't think to check the date stamp on the tire before going through the hassle and expense of mounting it. Sure, I can return it but now that it's on the bike that isn't practical. According to the "experts" tires should be replaced after five years due to rubber deterioration regardless of the tread wear, especially here in smoggy CA.
Chapparal should have disclosed the age of the tire in the ad; I never would have bought it had I known. Upon a google review search of Chapparal I found most of the employee reviews gave it a one star rating for the low pay, no benefits, no promotional opportunities and lousy attitude from management. I add unethical advertising to the list. Oh, yeah, one more gripe: their email contact link doesn't work, it keeps giving "error" messages. Caveat emptor!