Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Some pens die early but I love the writing style

I'm a long time fan of this product, but like many commercial pens, a pack is bound to have some duds that don't last very long. In general these pens do not last very long....I'd say a week or two is the average (I use the pen throughout the day). I like pens that mimic a fountain pen's writing quality though. They're also good to use for sketching, so eventhough they're more expensive than your average pen and last less I'm willing to pay for it.