OK, y'all think the nanoSTRIKER is overpriced at $26? Try this one on for size. LOL
Wilderness Solutions Fire Pen II It's a pen-sized fire piston with a mini ferro rod for $89.95
I want one but not for that price. They're overcharging for the addition of the fero rod ($15 more for the small fero rod). The piston is probably overpriced too.
Generally, pistons aren't as rugged as fero rods. For example, if you fall and bend the shaft or if you mess up the O-ring, then you're screwed. There has to be alignment and an airtight seal for the thing to work.