Thumb Score: +21

Amazon [amazon.com] has 14.5-Oz Amazon Grocery Petite Diced Tomatoes 4 for $3.44 – 10% (multibuy discount) – 5% when you check out via Subscribe & Save = $2.93.
Shipping is free with Prime or on $35+ orders.

Savings
[Prime] Prime Save 10% on 4 select item(s) (check and activate [amazon.com])