2GHz synthesizer module

Does somebody know if exists a low cost (<100S) 2.0GHz RF transmitter board?
Like the ADF4360-2 one?

Thank you,

Ste

I have another question. If I use a GFSK module like the Transceiver nRF2401A and set all modulating data equal to 1 (or 0), can I obtain a stable channel frequency (choosen by software) like with a synthesizer?

Ste