If there is an electrical contractor or distributor near you, I would stop in person at their desk. I'm sure they will roll off any number of feet at a good price. Just ask for 14ga, 2 conductor, stranded, for example. More than likely, they will have US made wire vs China. I think Blue Jeans uses US made Belden Wire, but not sure.
My son is an operations manager for a large electrical contracting firm for both industrial and communications industries. With my distance of needing 30 foot lengths max, I chose 16ga, 2 cond, stranded twisted pair, 99.9% copper, shielded, and jacketed. USA NO BANANA plugs.
Good luck!