> I fall for this time and again.

That tactic is called price anchoring and the reason it tends to work on a lot of people is because it relies on a cognitive bias called anchoring [1].

[1] https://en.wikipedia.org/wiki/Anchoring_(cognitive_bias)

Interesting example. With board games I avoid the deluxe versions because they're often incompatible with expansions. Power Grid and Settlers of Catan come to mind.