Although not an ideal CC weapon, a model 66 S&W magnum is an ideal home defence weapon. It’s no longer made, but you can find them at Auction Arms. You will be paying less than $400. For ammunition, go to Extreme Shock and try to get their .357 Fang Face rounds, if they’re still available. That is a soft tissue round, will not egress the body and creates an entry wound 200 times the diameter of the round. I’ve used those rounds and they are highly effective.
You can also try for a Remington 870 12 gauge pump. If you opt for the shotgun, get the 6+1 option, which is an extention on the tube magazine, which normally holds four shells. With the extension, it holds six.
A friend has a 6 inch model 66, I have a model 19. His shoots better than mine. Great choice.