Here's three tips: 1. Increase the value you provide more than the price. If you want to lift prices by 10%, give 20% more value. 2. Rename you products. This will remove the association with the legacy pricing. 3. Craft an awesome pricing communications strategy. I've had clients that have done both 1 & 2 above, then finished the communication to customers about those changes with the line "we understand if you need to go elsewhere" and they have never lost clients. Good luck!