My 4 year old is in his "heavy equipment" phase, and so I went ahead and bought the Tonka bulldozer for his birthday. I thought it was a tad expensive, but put out the money because I knew he'd love it, and assumed Tonka put out a quality product. Well its true that my son loves playing with it, but the rubber tread on the dozer wheels keeps slipping off and has to be constantly put on. I don't think it is worth the money its priced at, and would shop around to find a similar product for a cheaper price.