Personally I dont think anyone should be worrying about making a profit on ebay on these things, lets just enjoy using them.
Agreed.. I think there's more fun and general interest in everyone learning a little more about antennas and getting the opportunity to do some hands on experimenting..
As shown, the materials needed aren't a big deal and if you got a signal strength indicator in your wireless software, and an inquisitive, yearning to learn attitude, you got all you need..
This approach and attitude of learning, passing on knowledge to other interested folks is still a big enjoyment factor in ham radio and a huge part of it's history and reason for being.
And thanks for the link to the patent office.. Lot's of fun to poke around in there on topics of interest...