I highly recommend looking_for_luxe!
She is one of the few personal shoppers out there that allow clients to purchase an item in their own name. So you get the original receipt, the item shipped directly to your address, and the item will also show up on your purchase history at Chanel.
She works with very understanding, kind SAs that go out of their way to make you happy!
Her fee is very reasonable and she provides invoices, she also is very transparent about the breakdown of costs and she will tell you not only the total but also the individual amount for the item, sales tax, shipping, and her fee.
She also is absolutely incredible at finding items from past seasons, even popular items. If there's something out there that you want that you cannot locate elsewhere and it is able to be found, she will find it for you!