The finish is matte black. The length of the stakes that are anchored into the ground are 6.5 inches. I plan to coat the stakes with "tool dip" to keep them from rusting. I have no practical way of weighing it, but the 50 pound listed weight seems true. Some of the welds are a bit wonky, but that does not detract from the overall appearance. My package came open at the seam and most of the plastic "cable ties" used to hold the parts together were broken, but everything was included. Not a problem for me, but the delivery person may have said a few words. 

A local landscaper told me that plastic arbors can squeak in the wind. That, and appearance led me to purchase an iron one.

The finish looks nice, and even the fasteners are painted. This will be outside year-round in Wisconsin, so I expect it to rust over the years. For appearance, price, and expected durability, this is the best I found.