yes its a scam all the categories on this site is scam no legit sites sells such things ( Gift cards , money transfers , mobile phones ).
if you looking for legit and verified deep web Marketplaces you can check the darknet directors listed here Verified Darknet Markets & Directories
It really comes down to what link you are talking about but from the one you provided, I wouldnt trust it. Otherwise I would be cautious in trusting links that you are in doubt of.