No, they've said the essentials kit was effectively a trial run/special case. It's likely due to the target exclusivity deal; the money from that probably paid for the code while keeping the cost lower than the starter kit, even though it contained more.
The Essentials Kit (which is amazing) has codes for D&D Beyond. Stranger Things box doesn't.
What about the Rick and Morty box? Does it comes with codes to download the adventure and the custom Rick's Rulerbook?
No, they've said the essentials kit was effectively a trial run/special case. It's likely due to the target exclusivity deal; the money from that probably paid for the code while keeping the cost lower than the starter kit, even though it contained more.
Find my D&D Beyond articles here