Auspen Brand Refillable Dry Erase Markers
Aluminum Barrel
Replaceable Nibs
Endlessly Refillable
Xylene-Free
Math: 6 (endlessly refillable) Pens x 6 Bottles of Ink = (conservatively) the equivalent of 156 disposable dry erase pens
Each bottle of ink will refill a pen roughly 25 times (20 drops per refill)
From the Auspen website: "Most people think ‘disposable = cheap’ – what we found is that it’s the other way around. Disposable costs more and is a terrible cost to the environment.".
