I just noticed you have this thread going on the houseplants forum, too....looks like you are getting the same responses over there. It is usually not necessary to repot plants, but if you are experiencing problems, one of the suspects is bad soil...it could be spoiled. If you can get your hands on some Pro-Mix, that is one of the best soils on the market. Plastic pots can sometimes pose problems...they trap the moisture for a longer period of time than the clay/terra cotta pots do. Depending on how often you are watering (shouldn't be on an exact schedule), it might not be dry enough before you are watering again. I would switch to a terra cotta pot, but that is up to you. Yes, each segment (this should be fairly obvious) will form a new plant. I place mine (the bottom end) in little plastic pots with good soil and keep them damp-moist, but not wet. Prop the segments up with little rocks or something to keep them stable during this process. I keep mine in an east window so they don't get any hot afternoon sun. Good luck!

Blooming Like Always, Twice a Year

That looks like a large terracotta pot. It might have a drainage hole. However, it looks too big and I can't see the kind of soil in it. I'm guessing that isn't a pot full of quartz sand. However, if it is a large pot full of quartz sand then I can see how that might be difficult to correctly water to keep the plants healthy. The two spiky plants in the back look like Hoodia. They are Asclepiads rather than Cacti. They look unbothered about anything. The front left plant might be a dark-leaf Aeonium. However, I'm not sure the stem should be that dark. The stem might be rotten. The center red ball cactus was grafted on to a root stock and the root stock died. Unfortunately the red ball cactus can't be saved without grafting it on to another root stock. The dead root stock is a common problem with that plant. I agree the P. afra in the back right and Echeveria in the front right look like they can be saved. You might have to cut the long stem off the Echeveria and reroot the top. If those were mine I'd prefer to plant each one in separate smaller pots. Group plantings in a pot bought at a store often don't work long term. In this case the plants might look like they need to be watered but have been watered too much, or been moist too long, and lost the healthy functioning of their roots. Without healthy roots plants can look like they need water even when the soil is moist. Some people asked if the dish was purchased "as is". I'm guessing they meant to ask if it was purchased as a group of plants in one pot rather than ask if it was sold marked as is meaning no guarantee the plants were healthy. If they were sold with no guarantee then I wouldn't bother trying to return them. Sometimes I buy plants like that.

Maybe you've done something with them by now. If you want to post more questions, be sure to go to the cactus and succulent forum, not this forum, the gallery forum. Get pots with holes in the bottom, probably not a lot bigger than what they are in. There are different opinions about the best potting soil, some people like orchid mix, but I think about anything would be better than their current condition. They don't want full sun, dappled shade is good. Not sure where you are in AZ, but if it gets cold you might want to bring them in. I'm not sure about exact temps. Mine are outside all year, occasionally dips below 40. They are under a tree.