There are quite a few people who create very ambitious (or ambiguous) posts on Craigslist, either asking for far more than the cards are really worth, or just not giving enough information, so you need to learn to dig through the slag to find the gold
I will spend $30 on a three-pack of socks
Companies like PSA can appraise the card, confirm it's genuine, and give it a rating for its condition
The program is done in partnership with Professional Sports Authenticator (PSA), so all of the cards are graded and slabbed
4 Persistent Petitioners #595 Borderless Foil, Casimir Lee Artwork - $342.00 Another card that bends the rules of Magic to the point of breaking, Persistent Petitioners lets you play as many copies as youd like in your deck, though has a different end result than Shadowborn Apostle
Optimally, those 1/1 rats will have power boosts too, such as from Gnawing Crescendo or Imodane's Recruiter