RE: GWS Warning!!
Name any brand of RC equipment and, just like presidential candidates, 49% of the people will express hate and disgust, 49% will praise and brag, and 2% will be undecided or indifferent.
The 4 fellows and I who regularly fly together have a total of over 2 dozen GWS R4-P receivers (the full range model, not the current R4-P II) and over 4 dozen GWS Pico and Nano servos, plus a few GWS ESCs (we're not too big on GWS ESC's since we prefer Li-Po friendly ESC's). Price and performance of GWS products has been great for us. These things just keep going and going like the Energizer Bunny. We also have at least an equal amount of Hitec stuff.
Getting service, while seldom needed, has been no problem with either GWS or Hitec equipment that was originally purchased from a dealer (yes, we keep our receipts).
I buy a few things off eBay with PayPal, but only if the price is low enough to make up for no warantee. I wouldn't expect any manufacturer to honor a PayPal receipt from an individual-to-individual sale. I buy only if it is cheap and pitch it if it breaks.