I'm an optomist
Oh well, that's a shame.
How about this as a plan of action?
1 Don't worry about the case. Woodwind and Brass are having a sale, and you can get a new case from them for fourteen quid! See
http://www.woodwindandbrass.co.uk/acatalog/winter_musical_sale.html
2 Get it as clean as you can, then put it away for the weekend, don't look at it. Then, after the initial disappointment has faded, get it out again and check it over really carefully. Use your other sax as a model and check every pad, cork, spring and buffer is in place. Note down any problems and take a pic of them. Chances are it's not quite as bad as your initial disappointment leads you believe.
3 If a detailed check doesn't make it clear to you what needs to be done, take it to your nearest friendly local repair man and get an appraisal. Then take a view of whether to pay them to fix it, whether you can do it yourself or push it back out with an honest description on eBay
Good luck with it.
Jon