Exclusively for Prime members, Amazon offers the Woods Outdoor Extension Cord
for $7.97. Clip the 15% off coupon on the product page to drop it to $6.77
with free shipping
. (It ships in one to two months.) That's the lowest price we could find by $11. It's SJTW rated and is suitable for indoor or outdoor use.
Note: This coupon only applies to your first purchase in the "Tools & Home Improvement" category. Accounts that have purchased such items previously are ineligible for the discount. However, even if you are ineligible for the coupon and purchase this cord at the on-page price of $7.97, that's still a low price of $10. (Walmart
also has it for $7.97 with free in-store pickup.)