The TPD is only for those who sell. You're free to buy any tank or mod you want from wherever you want, as long as you pay the proper taxes. A German store will just no longer be allowed to sell certain volumes or items.

What does affect us is the tax on nicotine that's apparently coming in 2022. First 2 cents per mg/ml, in 2024 4 cents per mg/ml. Sounds like a little, but a 10 ml 20mg nic shot bottle in 2024 will cost 10x20x0.04 = 8 euros in taxes. Time to start stocking up on nic, again.