Amazon offers the Cambridge Mobile Computer Cart, model no. 50157BLK, for $34. With free shipping, that's the lowest total price we could find by $35 (outside of the mention below). Features include MDF construction, PVC laminate finish, CPU shelf, sliding keyboard shelf, and more.

Walmart offers it for $34 plus 97 cents for shipping. (Free in-store pickup is also available). Sales tax is added where applicable.