S.K.
My son just turned 3 today and for his birthday we got him a swing set. We had originally wanted to get a wooden one, but they are just so expensive - so we went with a metal one. I found this one at Toys R Us...
http://www.toysrus.com/product/index.jsp?productId=2982704
We love it. My son loves it. My husband actually put it together by himself - With tax it cost $270. The reviews online were great... we had originally picked out a different one, but had really bad reviews. This one is awesome.
Good luck!
S.