Amazon has the Splenda No Calorie Sweetener, 400-Count Packets for only $7.14 with FREE shipping after you use the 30% off eCoupon and choose Subscribe & Save.
This comes out to only $1.78 for 100-count box which is a great price (and it ships to your door.)
After you receive your order, you can decide to not continue with scheduled deliveries – you can go to your Amazon Account, click on “Manage Subscribe & Save” and cancel your subscriptions.
Pricing was current when the post was published, however Amazon prices change often, so please check before you buy.