I recently went to CSC to have my BG-E7 (7D grip) checked. The shutter release button is somewhat loose. The lady who attended to me acknowledged the issue. I asked her if Canon will fix it since I only bought it in less than a month from a local shop. She said no, and that I will have to pay $60 for the service. She explained that battery grips are considered as a consumable and they have no warranty. I asked about the warranty document that came with the grip when I bought it and she still insisted that I needed to pay. Needless to say that I left baffled, without having my grip "repaired".
I find it disappointing that local sets have no warranty, whereas import shops provide 1 week to up to 3 months shop warranty for their battery grips. So what happens if the grip you just bought turned out to be defective??? Bye bye hard earned cash