I thought I'd add a comment here as I had a pleasant (and as yet unacted upon) surprise when I logged into my VSL account.
It's bundle month at the moment which gives (I think) 40% off bundles/bundle completions. However, you may find that you have a bunch of the new "Vienna points" sitting in your account. In my case, I have about 7000 of the buggers. You can redeem them towards the cost of a product - 75% for Studio line, 50% for Synchron.
Anyway, there are two pianos in the Studio line I don't own: The Faz 212 and the 1887 Steinway. My discounted bundle completion to add standard versions of those is 297 Euros. But with my 75% discount from Vienna points, I could buy the two for a whopping 74 Euros.
I believe the Vienna points expire at the end of the year.