I don't understand why that exists. Store brands are for making things cheaper at comparable quality. Even if we want to accept that TJ's sriracha is of the same quality, proper Sriracha is absurdly cheap. You can buy a 6 month supply for a couple bucks, even if you use it for everything
https://eatingatjoes.files.wordpress.com/2013/09/trader-joes...
It's also terrible. At least when I tried it last year. Too sweet.