Yesterday I opened the Firefox ZTE. Here are my initial thoughts on Firefox OS. The device itself was very impressive for £60 / $80 for an unlocked device without contract. It was well packaged, feels no cheaper than a plastic samsung. The power of CPU and memory is low but what do you expect at that price. It is almost 10 times cheaper than iPhone 5 when purchased sim free.
Here are some pictures of unboxing the device.