Yes,using the Magic Plate included with the mount a GPS device can be used with this magnetic mount.
The Zebra Stylus with Twist Pen has a life expectancy of two years.
OnTimeSupplies.com does offer discounts on bulk orders. To recieve a quote, please contact us at 866-501-6055.
At this time, refills for Retractable Zebra StylusPens are only available in bulk and via special order from OnTimeSupplies.com. Just give us a call at 866-501-6055 and we'll be happy to take care of you.