Just bought this exact same product from Publix yeaterday for $10.99… not $12.99… and it wasn’t on sale either. That said with $5 shipping you would need to order more than 1 and I would say at least 4 to make this deal worth it. Not.saying it’s a bad deal… just saying you need to buy more than 1 to make it a deal.
The downside to these is that they deteriorate the the gaskets and rubber rings on the interior of the toilet.