Artstation recently added a new bundle feature that allows you to buy bundles of products at a cheaper price than if you bought them standalone. The most useful thing about this is that the system detects if you already own any of the products in the bundle and excludes that product from the purchase while still giving you the discounted price for the rest of the products. So when new products are released and added to a bundle you will always be able to get them at a discount.
Decals Bundle [Single User License] - https://www.artstation.com/a/5536771
Decals Bundle [Single User License] - https://www.artstation.com/a/5565812
Ornament Bundle [Single User License] - https://www.artstation.com/a/5568074
Ornament Bundle [Studio License] - https://www.artstation.com/a/5569106
JROTools - 2D Tutorials Bundle [Single User License] - https://www.artstation.com/a/5486372
I hope you will find this useful and please reach out if you have any questions or requests
JROTools Discord - https://discord.gg/R3EGuYD