It depends on a few things. Are the spokes bladed? Are they a high end brand? Also location matters. I built a wheel in Eugene, where there are a lot of bike shops, and they were I think $0.75 per spoke for double butted DT's. Pretty reasonable. Then, in another town in Oregon that had only one bike shop, spokes were $1.00 for no name straight gauge spokes. Double butted DT's were $1.40 or something like that. In your situation, though, I'd say $1.60 per spoke is either way overpriced or really really high end spokes.