Im not super-optimistic of its chances, however, as it doesnt actually hard-counter the interaction while also having tons of huge blind spots (such as permission and sweepers)
Yes, you can put colorless cards in Commander since colorless cards have no color identity
Each box of Lord of the Rings: Tales of Middle-earth will come with one box topper promo
On the other hand, for products like Secret Lair drops, Commander decks, or other preconstructed / box-set supplemental products, we used the cost of buying the sealed product (which is generally lower than the cost of buying all of the cards in the product individually) from around the time the set was released (for sealed product, you'll often pay much more if you wait until the set goes out of print to try to buy it)
Being blue you get to backup your dorks with counter magic should you wish and so a requirement to over extend is less problematic than it is for tribal archetypes like elves or goblins
Black Lotus is one of the most expensive cards in the game, with Alpha versions going for six figures in the printed market