I'm very interested in replacing my lawn with a low maintenance, durable ground cover (I love the look of thyme, but I'm worried it might be too expensive). When I look at lawn alternatives, it seems that most people use them in small spaces in a well-landscaped yard. But my yard has almost no landscaping-- just a huge lawn (about 1/4 acre) and a few trees. Are there any ground covers that can quickly cover that much space? I am hoping to find a ground cover that wont be too expensive, and can handle foot traffic.