Clean your rig! Get paid!! For cheap!!!
Aesop's Pawnshop may not seem like a particularly flashy card, and it may not seem like a card you should bother yourself with at first blush. "Why would I bother trashing stuff from my rig, if everything I put into my deck has a reason to be there?"
The power of Aesop's Pawnshop comes from the power of most good Shaper decks: flexibility. While you might be playing against the same Corps/players again and again, if you do not know what you should "prepare" for, Aesop's Pawnshop gives you some flexibility to plan for a little of everything.
Decided to bring some extra Links only to find you're playing a slow glacier deck without any Traces?
SELL IT FOR CASH!
Magnum Opus petered out and you'd really like to get an extra MU back?
SELL IT FOR CASH!
Taking the last 2 credits off Daily Casts? Instead...
SELL IT FOR CASH (and take 1 extra credit)!
On top of that Aesop's Pawnshop is a connection which will stack nicely with Calling in Favors, which is cheap enough to splash into most decks.