Whis is this not selling?

At the bottom of your listing there are links to other similar listings and in each one the copper wire is rolled up neatly rather than what you present in your photos. I would suggest you produce some nice looking loops of wire that are the full 10' each.

I would expect that smaller gauge wire would sell more often but it would take some research to determine that.

I did a little checking of sold listing and there have only been 4 of what you are selling. This tells me that you can not expect to sell these very quickly at all. The good news is you can let this listing run and just keep them on a shelf. 73, Mike

I'd second that . See there are 2 thoughts to selling copper with Ebay One is for future investment so your price can be kinda over spot but low enough for the buyer to dream of the day they resell .
For arts and crafts it needs to look well organized . Your picture looks as investment type selling but the price is way off spot .
Probably if you could get some spools like for sewing thread & make a nice looking copper wound spool you will get your price.
Ive sold plenty of copper on Ebay just not lately Ive got a 100% rating