Man, this is a textbook ripper post. Don't touch it.
Here's why this screams scam:
Fresh cards available for online purchases – No real vendor advertises like this in a public thread. If these "cards" were valid and not stolen/refunded, they'd be sold in private, invite-only circles, not on a combolist forum to strangers.
Debit cards for cash app or PayPal... to cash out money in it – That's just money laundering/drop accounts. The moment you "cash out," you'll get a reversal, a ban on your own CashApp/PayPal, or you're receiving stolen funds that will be traced back to you.
Checks and slips for any bank wanna drop in – Every single one of these "check drops" is either fake, washed, or drawn on stolen accounts. Banks catch them in days, and you're the one left holding a felony charge.
Telegram + Gmail contacts – No escrow, no vouches other than a fresh Telegram account. He'll take your payment and ghost. Seen it a thousand times.
"Only serious buyers" – Classic pressure line. Real vendors don't need to say that; they have so many customers they have to turn people away.
If you want combos or leads, stick to verified sellers with long rep or trade combos you've tested yourself. Don't get burned buying "linkable debit cards" from someone who can't even spell "combo" right.