Example of three plans: $25/$50/$75
Customer signs up today for $25 plan. At some point after that I implement the often given advice of raising prices so I double them to $50/$100/$150. However I maintain the current customers at their current pricing so that customer is still paying $25 for the plan that tier on. I’m fine with that.
The question comes when they outgrow that $25 plan. Did they sign up with the expectation that the next level up would be $50 rather than a hundred dollars? Should grandfathering be just for their current tier or for all pricing?
I’m very much leaning toward the former but I could see how a customer might take issue with that. Particularly if they were an early adopter.