Saturday’s best deals: A Seinfeld box set, $5 off any book, and more

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You’ll find a selection of the day’s best deals below, but for more, be sure to visit Kinja Deals.

Seinfeld: The Complete Series, $40

The complete Seinfeld DVD box set for an all-time low $40? It’s a Festivus miracle!

$5 off any $15 physical book order. Promo code GIFTBOOK.

Hot off the heels of its $10-off-$25 physical book sale last weekend, Amazon’s now taking $5 off any $15 book purchase (including multiple, cheaper books) with promo code GIFTBOOK, from now until December 5.

Just like last time, this deal excludes Kindle titles and audiobooks, but if there are any commemorative coffee table-type books or collector’s editions that you’ve been eyeing, this is a great opportunity. Just choose carefully; you can only use the code once per account.

Razer DeathAdder, $35

Most gaming mice look like futuristic EMP grenades or robotic pets, but Razer’s DeathAdder became one of our readers’ favorite gaming mice by keeping things clean and simple. Want to try one out, or buy it for the gamer in your life this holiday season? Amazon’s marked it down to $35 today, an all-time low, and a match for Prime Day.

Sensi Smart Thermostat, $102

While it doesn’t look anywhere near as cool as a Nest or an Ecobee3, Sensi’s Smart Thermostat offers the same basic wi-fi-connected feature set for less than half the cost. It even works with Alexa!

Anker PowerLine MicroUSB Cable 5-Pack, $11

Anker’s kevlar-wrapped PowerLine cables were an immediate hit with our readers, and you can upgrade your entire microUSB cable collection today with this $11 five-pack. That’s a couple bucks less than the usual price for this pack, which includes two 1-inch cables, two 3-inch cables, and a 6-inch cable.