EBay has gotten to be a nightmare over the past 6-7 years and I won't use them either. Selling cars on eBay is a joke. My parents tried selling their 5th wheel and their Audi on EBay last year and I can't even begin to tell you how many scammers tried to take advantage of them. It sucks because EBay used to be such an amazingly reliable platform to buy and sell anything & everything. Craigslist it's just as bad if not worse.
As for PayPal, I've had nothing but positive experiences with them over the past 15+ years. I only need to carry my PayPal card as it's linked to my checking account, my PayPal credit card and an alternate credit card. So if I don't have any funds on my actual PayPal card, (which I rarely do), it defaults to my checking account. But I can also go in the PayPal app and change that on the fly, so I can pay with my PP credit card or an alternate CC. If I don't want to add anymore charges onto my credit cards and I don't have any funds in my PayPal account OR my checking account, PayPal will still pay the charges and simply withdraw the money from my checking account up to a week later. So even if I'm broke, I always have money via PayPal.
Now their prepaid/load as you go cards are a joke. As are most reloadable credit/debit cards, green dot, etc.
Out of all of my debit & credit cards, I'd choose my PayPal card without question everytime. And, I've always received decent customer service from them as well. Not always quick to resolve an issue or the most courteous, but they've always resolved any problems I've had over the years.
Obviously YMMV, but my experience with PayPal has always been positive.
S5 tap'n