You know you can just buy a dutch oven and use it in your oven as a slow cooker. A lot cheaper than buying a counter top slow cooker.
I have a dutch oven too, but leaving my stove or oven on all day when I'm not home is a fire hazard. On the other hand, leaving the slow cooker on low all day is perfectly safe.
For me it is alot more expensive to use the stove oven than to pop something in the slow cooker. An added benefit is the meat is not dry, it is tender- and I make gravy from the liquid remaining. I buy the cheapest cut of meat and it comes out very tender.