Question about HP 410a

The cartridges can be returned to HP free of charge in the box or individually with a label that can be printed out. Information on how to do this is enclosed with the cartridges.

Various companies offer refilled, remanufactured toner cartridges, they are also interested in your empty ones. Easy to find with Google. One that comes to mind is http://www.swiss-toner-recycling.ch/.