The Cold Steel cutlass machete is probably your best bet. The cheapest usable "actual" cutlasses are going to be the Windlass 1860 naval cutlass at around $125 or Cold Steel's 1917 at around $160. If you don't mind something longer, Windlass' 1860 Union cavalry saber can be had for about $90. I've had one for about 7-8 years, and while it's only a rough approximation of the actual sword and much thinner, it's proven to be a super durable backyard beater. It developed a small amount of play in the hilt after a couple years, but the tang is peened, so a bit of work with a ball peen hammer with the sword clamped in a vise took care of that. I think mine was like $79 back when I bought it. About the best money I've ever spent on a cheap sword. :thumbup:
Btw, the Windlasses come dull, but they're very easy to sharpen with a file and some fine-grit wet/dry sandpaper on a piece of wood.