Duel Deck: Izzet vs Golgari

The new duel deck "Izzet vs Golgari" comes online on September 7. It is exactly the same date as for paper version. These decks contain six new cards from Return to Ravnica. Prolly, the beginners don't read this webstite thus we will not discuss if this duel deck is good for them to start their adventure with Magic, what is the main intention of duel deck, but we will focus on making money. Right away we will answer the question if it is worth investing several tickets to complement your bot inventory. I have checked the declists (click here to see it) and I prepared the list of cards which are worth more than 1 Event Ticket. This list, though a word "list" doesn't suit well here, because it suggest us that it contains at least several listings and that is not quite true. There are 5 positions in alphabetical order: Brainstorm, Eternal Witness, Golgari Grave-Troll,  Life from the Loam, Niv-Mizzet, the Firemind. I didn't take into account card Jarad, Golgari Lich Lord because it is from upcoming set Return to Ravnica and it is difficult right now to foresee if there will be any deck built around this card. The listed nuts above are worth about 13 Event Tickets. Therefore, our investment (4x duel deck) will cost us about ~30 Event Tickets (buy prices) and we will get some cards that already exist on MtGO. We freeze our money into not liquid assets. Tell me when your bot last time sold card like Niv-Mizzet. Additionally, for most players there is no difference if they use Eternal Witness card from Fifth Dawn, Theme Deck or Commander. It is only my personal point of view but I don't see why we should buy this specific duel deck, unless your bot politicy is to grant access to every card on MtGO.