It costs 89 Euros and is sold out until October 15.
http://www.axelweinbrecht.de/en/Produkte/Schreiben_mit_Metal...
http://www.napkin4ever.com/it/
http://www.vat19.com/item/the-inkless-metal-pen
Basically it's not 'everlasting', but lasts for maybe a few years, and you may have to sand the tip down occasionally to make it a finer point again. Note that it does use a bit of lead, and so isn't recommended for use by children. I don't plan on buying any one myself, since it just doesn't seem like the writing give fine-enough of a point for my needs (search on youtube, there's a review or two of these things.)
There are other brands on Amazon already; this is a refinement of the idea (purportedly less toxic chemicals involved) and not a completely new concept.
Review of this model: http://www.smithsonianmag.com/ist/?next=/innovation/inkless-...