20pk Sony single-use Carbon-Zinc AA batteries for $5

If you are a fan of Carbon Zinc single-use batteries, the 20-pack of Sony heavy duty carbon zinc single-use AA batteries (model SUM3NLB20A) are on sale for $4.99 per 20-pack at Amazon by Amazon itself. You can buy as many 20-packs as you like within reason (the limit is 27 20-packs per customer).

These are however an ADD-ON item, so your order total must be $25+ of products that sold and shipped by Amazon or fulfilled by Amazon. You can get to $25+ with any combination of products, eg five 20-packs. If you are close to $25 and need ideas to get over the hump, check the Elsewhere at Amazon section in the daily lightning deal round-ups. Once you clear the $25 limit, the usual free shipping terms apply, free 2-day for Prime or with a $35+ order for non-Prime (or $25+ in books).

On the other hand if you need AAA batteries, their 20-pack of AAAs (single-use, Carbon Zinc too) is going for $5.38 but it is not an Add-ON item, so if you are a Prime member, you can buy one 20-pack and still get free 2-day shipping. The shipping estimate for these is 1-2 months.