Cost of lipo to outer thighs/saddlebags. 5'7, 140lbs.

In average you ar looking around $3000 to do what you are requesting.  Some offices you maybe paying for "environment" than expertese and some you may be paying for procedures with machines that rare just hype with minimal to added result benefit.  Choose a doctor that does lipo daily and has at least 15 years of experinece performing procedures in approved surgical facility within United States.

Hello
The cost will vary depending between surgeons, as well as on other factors including the type of procedure chosen, so I recommend to be evaluated first. Find a certified plastic surgeon that can fulfill what you wish to accomplish.  Good luck.
Regards
Dr. Israel Mañon
Certified Plastic Surgeon

Cost for liposuction including the fee for surgeon, surgical facility, anesthesia, and post operative care will depend on the city and surgeon. With that said it's best to set up a few consultations with different surgeons and make an informed decision based on their experience and speciality in the field. View their before and after photos to see what the outcome could potentially be.