OK--Song is Delta's 'low cost' (allegedly) division. Leather seats, seat back tvs.
Now, the drive from ALbany.....
You would need to factor in the cost of the drive (gas and tolls) the wear and tear on your vehicle (kind of intangible, but it does make sense) and the cost to park at or around Logan for a week or more. Plus depending on your flight time, you may or may not need a hotel room at one or the other end of your trip. Plus your time, how far a drive would it be?
Don't get me wrong, I like Song, and fly them often, but I don't know if they are worth all the hassle, even for $500 (which is not an insignificant amount)
Good Luck!!!!!