Is this pot real ceramic?

No. The listing gives the material as plastic, with a finish meant to look like ceramic. That keeps it light and cheap, but it will not feel like glazed stoneware.

Does it have drainage holes?

No drainage holes are listed. If you plant directly, add a layer of drainage material or drill a hole, or keep the plant in a nursery pot inside it.

What size plant fits in it?

The pot is 8 inches across and 12 inches tall. A plant in a 6 to 7-inch nursery pot fits with room to spare, and the height suits trailing or upright plants.

Can I use it outdoors?

It is plastic, so it can go on a covered porch, but direct sun and repeated freezing will fade and crack it over time. Indoors is the safer use.

Is it worth buying over a real ceramic pot?

If you want the tall ceramic look without the weight or the risk of chipping a heavy pot, the plastic build makes sense. If finish and heft matter to you, a glazed ceramic planter will feel and look better up close.