Instruct: Classify Amazon reviews into positive or negative sentiment
Query: buyer beware

Though the package and the write-up states that this product will replace the Remington R200 head, it does not replace the Remington R200S. I'm not sure why such a large difference between the R200 and the R200s, but it doesn't even come close to fitting. And of course, after having to totally destroy the heavy plastic casing the head comes in, there is absolutely no way of packing it back up for return. Buyer be aware!