Today Turbine updated the in-game LOTRO store to allow for subscription modifications and account “upgrades” in the game store.
While this change does make it easier for players to subscribe to LOTRO, it is still not possible to buy VIP time with in-game Turbine points.
There are a few known issues with the new system which you can read about here.
For some reason I’m only getting the 1 month option 🙁