Another tip is to try to get one of those red corporate-pushed units from when the E53E first came out.
Basically every MB dealership was forced to take a red one (with chrome window surrounds) at around $101k MSRP; and then a max optioned “Edition 1” in Opalite white magno with the night package. Everybody wants that night package.
The white ones sold out pretty quick, but the red ones are kind of sucky option load. They should be more discounted if they’re still in stock because they’re getting long in the tooth.