According to a widely used repair pricing guide (not named per Pricescope rules), 14 Karat sizing beads are $88. Speed bumps (starting at 3 mm.) start at $118.
Your price will vary. There is always someone who will do it for less.
Do you have a good relationship with your jeweler? Mine didn't charge me for them, and it was done in like 20 min while a few of us were having a mini PS GTG to ogle the goodies.