https://www.ebay.com/itm/4X-FOR-Acura-Honda-Laser-Iridium-Spark-Plugs-9807B-5617W-IZFR-6-K-11-6994/123375890440?hash=item1cb9c6b008:g:dJoAAOSwsPNcCjux:rk:3:pf:1&frcectupt=true

Car started misfiring with less than 10,000 miles on these new plugs. Notice electrode is worn down already (this is consistent on all 4). Gap had therefore doubled. These were sent from China via eBay from the seller in the link above. I filed a claim with Paypal for refund of $13.