If I/he were to hire out the design stuff, where is the best place to find designers? Optimally I'd love to find a designer to partner with and work on projects

If I/he were to hire out the design stuff, where is the best place to find designers? Optimally I'd love to find a designer to partner with and work on projects as equals, but I'm willing to pay somebody to do the design if necessary. Any ballpark estimates on what reasonable web designers cost?