I got one of these today too. Seems like reasonable quality, but a lot of the cheap Chinese stuff appears that way when it arrives, time will tell on this one.
So my spare key had been sitting in a draw for a couple of years and the battery was flat. I went to the key cutting place at the mall, the dude behind the counter obviously was lined me up to rip me off with the new key cutting. He took a long hard look at the key, groaned and said yeah I can do it, as if it's the first time he had ever seen a key that wasn't a lockwood. "Mate that'll be $49.50" WTF!! Seems a bit exy, but being that there are no other close key cutters and I was feeling impatient, I begrudging accepted and then he said another $25 for replacement battery! (Felt like I'd walked into Subaru!) Passed on the battery and walked over to Dick Smith for a $9.00 battery. Anyway, key was cut perfectly. I proceeded to install the guts of the spare key and new battery in the new flip key. Perfect, doors actuated, boot actuated and key turned but wouldn't start! Took me about 10 minutes to work out that the little piece of "plastic" that fell out of the old key was important

Slotted that in (with a little tape wrapped around to make it snug) and it all works sweet.
Don't know why I wrote all of that junk above, to cut a long story short, I'm happy with the key, seems good, but time will tell of it's durability.