Amazon offers the McCormick Pure Vanilla Extract 16-oz. Bottle for $7.98. Add it to your cart via Subscribe & Save to drop the price to $7.58. With free shipping, that's about 50 cents below what you could expect to pay in local stores, although we saw it for a buck less in November.
Note: Be sure to cancel Subscribe & Save once your order ships to avoid being billed for subsequent shipments.