Link to this answer 500 decks of custom Custom Game Cards on 300 GSM black-core paper land around $3$4 per deck (about $1,500$2,000 total) before add-ons
Even discounting Skullclamp ($1.99) and Sol Ring (which is in every Commander 2017 deck but, as the most played card in Commander, is still worth $3.27, even with a ton of reprintings), the Vampire deck is overflowing with artifact value, with Door of Destinies being the single most valuable colorless card in in Commander 2017 at just under $6, along with Well of Lost Dreams and Blade of the Bloodchief, both coming in between $3 and $4
Be prepared to deal with numerous Fusion Monsters that, sometimes, can use your own monsters as material
When older sets leave the format, some staples dip in price, while evergreen collector cards keep more of their value
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