Bank Error In Your Favor - Collect $50

Edit: I've provided further information, so if you want to change your answer, go for it...

I have seemingly gotten a bit of a monetary windfall due to further miscalculation on the part of the credit card company I have paid off. I'll be receiving a check in a matter of days for a decent chunk of change. Therefore, I put it to you:

[Poll #1058722]
Further Info:

• Murray's Cheese University page
  
• Laptop is same as cash for 90 days, then will be my highest interest rate debt.
  
• Other debts include: paying off parents (no interest), paying off credit card (no interest, on fixed payment plan that ends next year)

(I don't include student loans, because those are the last things it makes sense to pay off; a financial advisor once told me that my student loans were a gift from god and would never get a better interest rate and it's not worth it to pay them down unless I pay them off all at once)