Cecil Baird1,
That is a good price. I bought the woven twine and straw from the supplier the highway department uses locally and paid $50 for 100' which is a pretty decent price also. I also like using the erosion fence with stakes you can get from HD, Lowe's, Menards..... I put it halfway down the hill and around the pond. I used the wire staples to hold the mats and the bottom of the fence down. Make sure there is plenty of straw around the fence especially where you're force the water to go.
Which grass to use is a tough question. I don't like tall fescue, but I used is around the house and on that side of the pond. The other side I used perennial rye grass and plant 700 oak seedlings. The dam I planted in native warm season grasses and wildflowers and straw it for two years, but it was worth the trouble because of the wildlife value and looks.