Chrissty.
You may be right about the positive feedbacks. I have absolutely no experience with any hair removal products other than a pair of sissors.
But I should point out that, in the UK, the return period is 12 months. Though I should also point out that British people have a reputation for not complaining. I do and an usually treated as a nusance. I had a problem with a major supplier a few years ago and embarked on a letter writing campaign to anyone and everyone. It took a year for anyone to take any notice but I did eventually get a full refund and they didn't even ask for the return of the products.
Having said that, the US version will need to be rather different in design, if only because you use 120volts and 60Hz.