Chevron Techron Fuel Injector Cleaner, 16 oz 6PK @ Costco for $14.99
The sale is Until 3/18/2018. YMMV as this seems to be an in-store deal.
Costco offers a rebate for Chevron Techron Fuel Injector Cleaner.
$21.99 - $7.00 = $14.99 + taxes
*Tax calculated on the pre-rebate price.
Yes, this is the diluted version of the complete fuel system cleaner.
PS) Unfortunately, I don't know how to include pictures in this post.