You don't say what size or what style. Or if you want top or bottom mount PSU, or if you want PSU included. Or if you have a preference on color. But for that price, I would suggest one of these. I have built with several of them. Seems I end up building a lot of budget PCs lately.
http://www.newegg.com/Product/ProductList.aspx?Submit=ENE&N=100007583%2050002120%2050002177%2050001333%2050001379%2050001320%2050001375%2050008791%204025%20600029808%20600053918&IsNodeId=1&bop=And&Order=PRICED&PageSize=100