Lower cost diffusers:
I saw at Target a diffuser by the Everyone brand in the Pharmacy department. It was a good price, though I can’t remember exactly what price it was. It’s of the type liked and enjoyed by several people I know. This is where you put in some water, few drops of oil. when the water is gone, you can start over. You don’t have to worry about it running out of oil like you do with a pump diffuser. With a pump diffuser, it usually has to be turned off (unless, maybe, you buy a very expensive one with a timer, or whatever).
I have a bulb diffuser. Has a glass piece on it. I do not recommend. I started to write about this, but I won’t waste my time. If you want to know more, please contact me and I can tell you my experience.