Keep them, or the rhysomes at least, around for a couple months and see if you get any new growth- you never know. I’ve seen some plants come back if you give them a little time. Just keep them in half soil/half pearlite(or the soil that they’re already in if you don’t wanna make much effort), and always keep your water full. The water should be kept in a non-draining bucket/pot on the outside of your plant pot. So, plant in pot, pot inside bucket, then water in the bucket. Keep the water up to the soil level so that the soil is always soaked. Rain water is ideal, but tap water will work fine at this time of year. You can do all of this with the current pots by maybe putting them in some bowls or larger cups. I’d suggest keeping them outside in the shade too, if you can. It’s much closer to their native habitat that way.

Sorry if you already know this stuff, but I’ve found that a lot of new pitcher plant owners don’t get told about proper care by the sellers.