Someone please knock some sense into me!

[Starbuck]

So I have the opportunity to adopt a 4 year old Honduran milk snake with all the fixin's at a great cost... via craigslist ( :/ )

The snake is between 2 and 4 years old, handleable, eats F/T etc, and comes with a 50 gallon tank and hides/water dish/frozen feeders etc.
Apparently it got out of its enclosure back in the late fall 2012, and the owner just found it and can't keep it any longer (?)
She also said it hasnt eaten since she had found it again (it sounds like she just found it)

My question to you all: is this a suicide mission? I've never kept milk snakes, only kings, corns, pines, and a rosy... I am assuming the care is not that different. I also am a bit worried that she may be a problem feeder. Im not sure the condition she is in now, as the pictures posted on craigslist could have been from any time.
I am the kind of person who will take their snake to the vet, but i also have to pay for undergrad, and vet school coming up; so it may be foolish to buy a snake that admittedly has issues; if it turns out that the snake takes a heavy downward spiral and needs to cost a ton.

Then again, she could be perfectly fine.

So what is the verdict of the masters? buy, or not to buy?

(if i pass on this snake, i will likely get another juv corn in a few months instead)