Yes, we do allow upgrades. The way it works is you would receive 50% of the value you have already paid to go towards the upgrade. 

For Example: If Luke paid $100 for a 2K collection, the 4K version of the collection is $300. Luke would pay $250 to upgrade his collection to the 4K version.

If you have any further questions regarding this, or would like to upgrade your resolution, please contact our sales team at