What upgrade paths are available for users who outgrow the Starter plan’s capabilities?

If you outgrow the Shopify Starter plan, you can upgrade to a higher plan such as Basic, Shopify, Advanced Shopify, or Shopify Plus, depending on your needs. (Shopify Help Center)

References

1. Starter plan - Shopify Help Center
2. Flexible Pricing Plans for Every Stage of Your Creator Business
3. Spacemail | Create business email address for your domain
4. How Many Products Should I Start With Shopify? - EComposer
5. Loomly Pricing Hiked: Is It Still Worth the Investment? - SocialPilot
6. Upgrades | Cookie Clicker Wiki - Fandom
7. Which Shopify Plan is Best for Dropshipping? - ZIK Analytics' Blog
8. Upgrade Metabase