Cost of Mini Lift for Under the Chin ?

Ours costs between 6000 to 8000 depending upon whether it is 1) performed in the office under local anesthesia or at a surgery center with general anesthesia, 2) performed with or without a submentoplasty.
Our lift is mini, but it is still has real results, so we expect patients to be at home for 1 week. Be wary of claims of recovery within a few days as these claims are either exaggerated or not enough surgery was performed to obtain a significant, long-lasting result.

Cost will vary with geography, surgeon characteristics (fellowship trained in cosmetics vs residency training only) and the specific type of lift you need (there are many). 
The key issue here is selecting the proper procedure for your needs though, and even though one may desire a mini lift, that may not be the exact correct procedure for them. Specific aspects beyond a mini lift can be strategically and specifically addressed to blur the lines between a mini and full lift, including addressing the neck, which is often the case. 
The cost of the lift should be based on the amount of procedure necessary to meet your individual needs. 
You should be able to see lots of before and after photos from your surgeon, you should be able to call other patients who have had the procedure, and your surgeon should have a good reputation with his or her physician colleagues and patients. 
Fellowship training is important, surgeons simply do not perform enough cases in residency. A plastic surgeon may have seen (not performed) 5 facelifts in residency training and be board certified, as there is no minimum on that individual procedure, but a fellowship trained surgeon will likely have added 40-50 or more facelifts to that baseline training. There is no substitute for the focused fellowship training. 
Fellowship training for me means that I trained on a large number of procedures and learned to approach rejuvenation in many different ways. That means each lift I perform is different and individualized. It also means each is proficient and efficient, allowing the use of local anesthesia only when appropriate. 
Facelifts utilizing mainly local anesthesia, often with some mild to moderate sedation, mean safer procedures and faster recovery at home versus staying in the hospital, but they take a skilled surgeon to perform. 
To ensure you are receiving the highest level of care, seek out a modernly trained, new-school dermatologic surgeon, oculoplastic surgeon, facial plastic surgeon or plastic surgeon who is board certified and fellowship trained in one of these "core four" cosmetic specialties.
Cameron Chesnut#realself500 Physician