Can you sell your ZCA licenses to someone else? 150 Users 3yr Support...

Seeing as I can't get a call back from my local Zimbra/VMWare sales guy nor a reply to an e-mail I've just about had it with this company and product. For anyone looking at this product look elsewhere. This is not to take away from the Tech Support who have been great. We've been waiting for ZCA7 since April (I'm sure others have been waiting longer) but the whole sales process included conversations on 7 and how great it was and that is was coming shortly. Now I sit on a time bomb of an E2K3 server. Had I known what I know now I would have went with Kerio as they were far more responsive and customer oriented.