I ordered them from a place not too far from where I live
along with 2 of these WAY cheap 5g 3 channel rx that work with the 9x radio:
Shipping is only $5, and code RCX10 gets you %10 off.
I no longer buy any receivers for the Spektrum, all but 3 in my fleet have moved over to the 9x!!
(in fact, anyone want to buy a DX7??)