1. First-Time Customer Discounts

2. Subscription Services

3. Promo Codes and Coupons

4. In-App Deals

5. Bulk Discounts

6. Free Delivery with Minimum Purchase

7. Sale Items

8. Loyalty Programs

9. Cashback Offers

10. Refer-a-Friend Programs

11. Email Subscriptions

12. Special Days and Holidays

13. Clearance or Closeout Items

14. Local Promotions

Additionally, pay attention to delivery fees and tipping for drivers, as these can add to the overall cost of your groceries.