Can I get competing quotes for a specific dental operation?

I unfortunately don’t have dental insurance. I can get it in three months but I don’t really want to wait for it. I went to the dentist for a checkup/xrays/cleaning and I have a sheet saying I need 6 fillings, which teeth, and some more details. They want about $600 to do it, which, while expensive I still think is fair. (Dental insurance alone for a year would have cost ~360).

I was just curious if there is a way to solicit quotes from other dentists or if there’s any type of tool in place I could use to check out if someone can do it for less?

Thanks!