How about Ashlea Components?
From the e-mail they sent me:
"20-100 pcs x XC3S400-4PQG208C £13.40 each
delivery 4/5 days to you
We accept all major credit cards."
I enquired about bulk buying the part, but they may sell one at a time too.
Website:
http://www.ashlea.co.uk/E-mail: sales@ashlea.co.uk
