One lord gives you a +1/+1 to your tribe, another gives first strike, another menace or trample, and then they all feel the same
And to be honest, I just found it quite enjoyable to expand my collection continuously, and don't consider it to be monetised in an overly blatant way, nor disturbing in the way it's structured
Prices are also constantly being driven up, too, making it even more difficult for buyers to get their hands on any
Lastly, for how much money should i sell it
Whispers of the Muse (T1, Ext, S, Block) A favorite in "Turbo Xerox" (a blue deck which used minimal land but a ton of cantrips to thin out the deck), Counter-Phoenix (Shard Phoenix + Forbid) and Tradewind-Awakening (put Awakening on the stack, tap all your lands for mana, untap all your lands), Whispers has what might seem like a hefty price to pay for one card but you get to do it turn after turn after turn