Amazon [amazon.com] has 40-Count 1-Oz Tostitos Corn Tortilla Chips (Bitesize Rounds) for $20.22 - 15% off when you 'clip' the coupon on the product page - 5% when you check out via Subscribe & Save = $16.18. Shipping is free w/ Prime or on $35+.

Note: Coupons are normally one use per account, possibly targeted, and YMMV.