There are multiple factors to consider when looking at card value and it does vary from set to set, so its worth taking these with a pinch of salt
While I cant find confirmation on whether these decks will contain new-to-Commander cards, the low price point makes me suspect these will be all reprints
Take a good example at the onerous Oloro deck: Oloro is one of the most commonly played leaders out there and leads a life-gain deck that really is hard to stop, as he'll still work in the Command Zone
WotC also created a Secret Lair manga version of the Instant spell, with it priced at around $25
Since it was its own sheet, if you got a rare or mythic rare double-faced card, you'd also get a rare or mythic rare single-faced card in the booster
Simulate opening boosters with realistic drop rates and discover the potential of each pack before even buying it