Is the Cuisinart CM1331S worth it?

It is a reasonable buy if you want a large programmable drip pot at a modest price. If you mainly drink one or two cups, a smaller or single-serve brewer will waste less coffee.

Does it use pods or K-Cups?

No. It is a drip brewer only and takes loose ground coffee with basket-style paper filters.

How many cups does it actually make?

The carafe holds 12 cups by the standard 5 oz measure, and the water tank is 60 fl oz. Real mugs are larger, so expect fewer full mugs than the cup count suggests.

Can I set it the night before?

Yes. The 24-hour programmable timer lets you set a brew time, and auto shutoff turns the warming plate off afterward.

What filters does it need?

Standard basket-style paper filters. The brew basket itself is dishwasher safe.

When is the price likely to be lowest?

Drip coffeemakers like this tend to dip during holiday sales and back-to-school promotions. Check the price history before buying rather than assuming a listed price is a deal.