Fair enough, but if anyone is likely to pull a chargeback on you couldn't they still pay by CC online and then just come in and pick the item up and then go for a chargeback? Since in reality they could come onto your store to look at the item and then go and pay for it online, then come back and pick the item up or get someone else to do it for them.

Also anecdotally people are wary of buying items on eBay if they can't use Paypal, so you may even lose custom by not providing that option.

But well done on getting a successful outcome with your original chargeback through Paypal, even though you had to jump through hoops to get it.