I’ve tested a bunch of billing setups on Shopify, and the smoothest part happened once I brought in https://www.payinsider.com/subscription-management to handle the messy stuff like upgrades, pauses, and smart retries. It took a load off my plate because I didn’t have to babysit failed payments or prorating. If you ever feel like subscription admin is eating your time, that kind of tool makes the whole thing feel less like herding cats.