Steam are having a sim fest sale. I purchased Train Sim World 2: New Journeys Expansion pack, which increases services and passenger numbers for the original Sand Patch, older version of Bakerloo stock (unpainted aluminium), and more S-bahn services on Köln - Aachen route on TSW2.

Later in the day, I got notification of 2 more DLCs on my Train Sim watch list. Both were bargains, so I bought them:

1. Salzburg to Rosenheim $28.47 - this completes available DLC routes on Steam for our Euro trip.
2. Class 700 UK DMU. Has bad reviews and needs Blackfriars to Dover route for included scenarios, but at $10.13, a pretty good price.