As a recent release, LP copies of this card are typically the worst available condition and sell for about $80, while NM copies sell in a massive range depending on whether they look to be in perfect condition for grading
It doesn't copy whether that artifact is tapped or untapped, whether it has any counters on it or Auras and Equipment attached to it, or any non-copy effects that have changed its power, toughness, types, color, or so on
With a clear focus on user-friendliness and multiplayer compatibility, it represents a worthwhile addition to the existing rangeespecially for players who want to start together.
While casting a spell without paying its mana cost using the last ability, you can't pay alternative costs, but you may choose to pay any optional additional costs the spell may have (such as a kicker cost)