I know several folks who over winter their Pepper Plants in containers. I have not done this because of limited space. I am sharing this Link which may give you some ideas about keeping those rare/difficult to find Pepper varieties.
Gary

Over wintering chile pepper plants
a guide about keep your chilli pepper plants alive for more than a single year. ... over winter A Chile plant's mission in life is to set seed, ...
www.thechileman.org/guide_overwinter.php