A had a new dishwasher delivered a few days ago. Gave $5.00 to each of the two guys. For comparison, it was a single hand truck up three steps and about 45 feet total from the curb to the kitchen, and it took them less than two minutes including the paperwork.
Here's the first hit that came up in my web search engine du jour, complete with a BMW reference:
https://www.moving.com/tips/tipping-movers/