I would think $300 would buy it, and the collar and hames are about $175. It is not a work harness, it is a buggy harness, but made of the heavier harness leather. The bridle has some metal on the browband like a show harness. The rest is plain. It was made by Joseph Bowman in Millersburg, Ohio. I got it in 2007.
He has the harness, so I can't get pictures of it, but I will see if I can get a picture of it on Debbie Belle. I have to get them to my iPad.
Do you want a collar and hames, or a breast collar? If you want a collar and hames, you will need a collar measurement, which is a straight line from the area in front of her withers, to a little bit above the base of her neck. I would guess it could be 22"-24", just to give you an idea. Debbie Belle wore a 24". The mare in my avatar wears a 20". She's 1/2 arabian, 1/2 Saddlebred, 15.1 HH.