I'm afraid not, unfortunately. 

no, you can't trade ecvs,ebbs and pbbs

if they allowed it i would trade my 2 new ecv for million of cred >:) or an ebb rofl

I got 50 mil for my ebb New York back in the day. Finally got a new one this weekend.

You can sell the ECV to harbor for 700000 credits. I sold both of mine that I couldnt use.