I have one I purchased from a guy making them to help finance an adoption.. I have to say they are OK. Making one yourself is just as good.. you can buy the parts a lot of places.
If the cost of the complete cord is only about 25%/ 30% over the cost of the parts, it's a good deal.
If the cost of the complete cord is only about 25%/ 30% over the cost of the parts, it's a good deal.