Can you buy something for 80 euro at the age of 13?

I (13) am an enthusiastic draftsman who likes to draw digitally on a laptop. That is why my question is whether I can buy a graphic tablet for 80 euro at Media Markt, even without the consent of my parents.

For 80 euro you only get scrap

I'm 14 and have already bought vouchers for well over 200 euro

"A child is allowed to […] conclude contracts, in particular purchase contracts, which he can serve from his own resources, for example for sweets. However, if the payment obligation is so high that the pocket money is probably not enough, the legal representatives will then have to agree again. A child can also buy bigger things if they have saved it or received money for their birthday "

https://www.advogarant.de/rechtsanwalt/gebiete/rechtsanwalt-fuer-verbraucherrecht/kauf-tausch/geschaeftsfaehigkeit-ii