u/Conscriptian

Hi, I'm new in the TCG hobby and new to SWU. I bought my first box and found one of the packs was already open at the bottom (the box was propper sealed tho) I didnt think much of it but then when i held one of the cards i felt this texture at the bottom. It seems the package sealing machine nicked this card too and thats probably why the pack was open in the box no? Anyways I was wondering if this damages the card value at all? and does this kind of thing happen a lot?