Start here: three different procedures, not three price points
The right method for cheek augmentation depends on what is actually missing from your face, not simply on budget. If the cheekbone itself is flat and you want projection and definition, an implant is the only option that reliably creates it, because it sits on bone and holds its shape permanently. If the bone is fine but the soft tissue beneath it has emptied with age or weight loss, fat transfer restores that volume more naturally and improves skin quality at the same time. Filler is the right answer when you are not yet certain, since it is temporary and lets you live with the change before committing to anything permanent.
Cost points in the same direction over time, not just on the day. Filler is cheaper upfront and considerably more expensive over ten years, since it must be repeated indefinitely. Surgeons who offer all three methods tend to recommend filler first for a patient who has never had anything done, and reserve an implant for someone who has already used filler for years and wants to stop repeating the treatment and the cost.