Let me help u ;p .
When my gf bought a FX2, that week we went to sls and get a OEM (digipower, 1030mah, i think) at $24. I find out in hwz, many get it very expensive like $60, or $30 plus. One guy get it @ $24. I didnt bother to bargain. Tell the sale i need that battery. Hand him $24, and off i go.
But recently, most CSer is able to get from AP at $20. FYI.