Ballpark landscape costs?

Question:I'm in the Dallas area and am looking to have someone pull out 8 boxwood bushes and replant the beds with some other shrubs (I'm thinking 4 blue junipers and about 10-12 other shrubs that will be 2' tall to better frame our picture windows on the front of the house).

Anyone have a ballpark idea of what I'd be looking at cost-wise for plants, labor, and design? I don't even know what would be considered "reasonable".

Thanks!

Answers:
2 men one day at $40/hr.= $320
1 land scape design for small area ($150-$200) or you could do the design yourself, sounds like you know what you want.
Add the cost of the plants and you have a figure.