Thumb Score: +22

Amazon [amazon.com] has 4-Pack 14.9-Oz sodastream Drink Mix (MTN Dew Code Red Zero) for $12 – 5% when you check out via Subscribe & Save = $11.40.
Shipping is free with Prime or on $35+ orders.

Subscribe & Save
5%: $11.40
15%: $10.20
Add to next delivery [amazon.com] (with free shipping)