I was in Munich two weeks ago.
If you go to the Lederwaren Hetzenecker, this specific store (there are 3x in downtown Munich), will give you 20% discount on current line RIMOWA, if paid in cash, or a 15% discount, by credit card. Address below:
Karlspl. 8, 80335 München, Germany
This pretty much takes out the price increase that was initiated in Fall 2018, when the current generation models were introduced.
This is about as good a deal on current generation RIMOWA that can be found here in Germany.
Best wishes and congratulations on your upcoming addition to your travel collection!