Now, that isn't close to what Charizard or some Pikachu cards sell for, but it's more than honorable for a creature as disrespected as Raichu is.
The benefits of shaving your opponents life down are twofold as this also triggers proliferation meaning you get to double any existing counters on your creatures
look at a number of cards from the top of your Deck equal to the Level that the sent monster had in the hand or on the field, then place them on the top of the Deck in any order
For example, Second Star to the Right costs 10 Ink to play, but thanks to the Sing Together keyword, you can exert characters to match the cost
Aside from that, this card requires you to pay 1,000 LP to attack with it, which can be a problem if you play it late in a duel
Traditionally having strong abilities, attacks, and HP totals, these cards are highly sought after