Yes, I've been recycling all types of stuff, including different grades of wires, weekly, for about 8 years now. $.50 a pound is pitiful. The classify copper wire as either #1, #2, or if it's stripped BS (brown,shiny). #1 is the stuff you can bend and it stays in it's bent shape, or the stuff that is thick and heavy (you can see that it has more wire inside than insulating covering). #1 is paying about $1.50 a pound, right now. #2 is, almost, everything else -- telephone wire, data cable (multi-stranded stuff), extension cords, vacuum cords, anything used by a household appliance.... #2 is paying about $1.00 a pound, right now. BS is #1 that's been stripped (it's the highest payed for of copper--even pays more than all types of copper tubing (which pays more that wire). It's paying about $2.50 a pound, right now. Oh yeah, there's one other class, and that's Romex wiring, the electrical wiring found in houses and buildings. That pays in between #1 and #2, which about $1.20 or $1.30.
Copper has been at an all time high, recently, but has just dropped a little bit. Still, though, 50 cents a pound is awful. The prices I mentioned apply to the place that I bring it. There are some places that pay less, some more. Some pay more for quantities over 100 pounds, and some pay even more than that for large, large quantities.
I've come accross places that pay half of what I get, and some that pay even more (but they're too far to make it worth my trip). Just call around to what other places are paying.