Instruct: Classify a given Amazon review as either positive or negative.
Query: upset

Upset because we paid $279.00 for the razor mx500 and got on line today to find they are being sold for 229.oo. I think that we should be compensated for the differences or sent a extra battery pack.We just recieve the razor today and was checking for the price of an extra battery pack and notice the price difference. Thank you for this attention. Darrell Hart