The deluxe edition includes the base game, the Season pass, and a Cosmetic recoloured skin DLC.
The Season pass alone is $10.30 (a historical low) and the base game is the same price (it has been lower once before).
Just note, the game has no offline only single player mode the way the old Elite titles did, and thus cannot be pirated. It you are interested in this sort of game, cough up the money now while the game and it's season pass are heavily discounted.
Fool that I am, I paid about $13.50 US for the game on sale last year and $11 US for the dscounted Season pass last month (about $34 AUD in total). The Deluxe ed is really good value.
Elite Dangerous just got a large content update yesterday which did get some people back into it just like myself. The game is sort of like Euro Truck Simulator but in space and also has a steep learning curve. However, the game turns into a grind-fest early on which may discourage new players. Overall, I've gotten my money's worth out of the game (around US$30) with over 500 hours in it.
If you don't like it or can't figure out how to set the game up, you can always request a refund from Steam if you have less than 2 hours played.