Instruct: Classify an Amazon review as either positive or negative.
Query: The price gets a hugh increase (more than $150)

From the reviews provided by GPSer, C320 looks like a perfect machine with reasonable price, but now the price got up more than $150 now at Amazon.com . Personally, I think it is not a good time to buy this unit now, maybe after the new type of the Garmin unit comes out with reasonable prices. I will wait.