Hartz 4 cost takeover for PC or laptop + printer (also for used goods)?

Hi. I'm a Hartz 4 user can therefore apply for a cost transfer of a maximum of 350 euro for a child to buy a PC and printer. My question is whether the devices can also be bought second-hand on eBay as long as you can prove it, e.g. T-bill should that actually do not pose a problem or here is the application document.

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Yes you can, as long as the money was demonstrably used for what it was intended for

Yes. New you get nothing for 350 euro anyway.