I tend not to go ebay on these things, as I'm not sure if DirecTV will support it. But, I'm still not clear on this. For my 5 boxes does that mean I'd have to purchase a DECA for each or does the $199 deal from DirecTV include all necessary DECAs (and whatever other equipment I might need)?
The $199 fee includes all hardware to get you on a SWiM system, any DECAs necessary for non-H/HR24 receivers, the Cinema Connection Kit, and receiver swap outs necessary for SWiM.
As for purchasing DECAs via ebay, don't be too concerned about DirecTV. If you are doing that anyways, your setup will be considered to be unsupported. The only way to have a supported MRV setup is to purchse the Whole Home DVR upgrade via DirecTV.
The biggest area this comes into play is that if you get an additional receiver, DirecTV will supply you with a DECA if it is not a H/HR24. If you have an unsupported setup, you would need to get the DECA on your own dime.
Today's problems don't worry me, I haven't solved yesterday's yet.
SlimLine-3 Dish w/ SWM16 (HD Service / WHDVR) / Full Setup
HR34-700 / Panasonic TC-P50G25 HDTV / HDMI / Networked - DECA / Family Room
HR44-700 / Samsung HCM5525W HDTV / Component / Networked - DECA / Bedroom
HR24-100 / Samsung HCM5525W HDTV / Component / Networked - DECA / Bedroom