I don't know how others experiences with Expansys have been when ordering this stock extended battery and back cover, but mine has been horrific.
I realize there are other places to order from and if I had it to do all over again, I would've used one of them. I placed my order on August 6th and immediately got a confirmation email. So far, so good. When I ordered, their website stated the extended battery as being "in stock". I have no idea where Expansys is located, but I figured I'd have the battery in a week or so at worst. Man, was I wrong.
After about 4-5 days of no word on shipping, I checked the status of the order on their website. "Awaiting stock to fulfill order". WTF? But the website clearly stated the battery as being IN STOCK when I ordered. Ok, ok...I'll give them a few more days.
2 weeks go by and still no word. Same status showing on their website. So I send their customer service an email. FIVE DAYS LATER I finally get a response. "We're still awaiting stock but your order should ship on the 27th". That would be today. It's still early, but I haven't heard anything yet.
So, I've been waiting 3+ weeks at this point for something that was clearly listed as "in stock" when I ordered.
Needless to say, I won't be doing business with them again.
What I've had: iPhone 3GS, Samsung GSII, HTC One X, Samsung GSM GNex, iPhone 4S, Samsung GN2, Motorola Atrix HD, HTC One X+, Lumia 920
What I've got: Samsung GSIII, iPhone 5
Samsung GSIII: Running Task's AOKP
iPhone 5: Jailbroken