Where is the best place to take my momma cat and the 2 kittens (6 months old) to have them spayed? For free or cheapest possible please?

Best Friends runs a low-cost spay and neuter clinic in Orem. They offer a family plan package for $75 to spay/neuter a mom and her kittens. Go here for info here and to book appointments: https://utah.bestfriends.org/our-programs/spay-and-neuter

Some place like the animal society, may do free or low cost spay and neuter, I am not sure when or if, or where. Call their offices and maybe the county shelter and ask them. CALL THE ANIMAL SERVICES TO SEE IF THEY, low cost spay and neuter.