I would not worry about it. 1099s are 'informational reports' to IRS, regardless of their source. My investment accounts send them to me, my banks send them to me, some shopping companies send them to me.
In theory profits from sales on eBay are taxable, though I know of no casual sellers who have ever even considered it. It would be more appropriate, perhaps, for eBay to be reporting sales to IRS by seller, but I'm sure they have found a way around that just as the owner of a flea market does not have to report sales (in part because the owner of the flea market has no idea what the vendors who rent spaces have as sales). The 'next best thing' is to tag the Paypal receipts, though this too is nonsense since some eBay vendors take credit cards or debit cards and some take personal checks or money orders and don't run their payments through Paypal at all.
I do not file copies of 1099s received with my tax return and you do not either. They are informational reports.
I never receive $500 or more through Paypal in any month, so it is unlikely I will receive any 1099 of any sort from them.
What I do need to do is file a Schedule C for my business. Although I could list only fees and bonuses as income, I choose to report as income every penny I receive--whether it is through Paypal, by check or by direct deposit. My records support those receipts and break them down to what is fees, what is bonuses and what is reimbursements. Reimbursements are not taxable so are deducted from my return as a single line item I create in the page 2 'miscellaneous' section called something like "Reimbursements included income". The income portion of my Schedule C has a space for payments I have received 1099s on and for payments I did not receive 1099s on. More than half of the 1099s I receive do not correspond to my records for the company and generally the discrepancy is not large enough to make an issue of. I simply add up what they report and put it on the 1099 line. I then subtract that dollar amount from my total income + reimbursements for the year on my records and enter that as income for which I received no 1099s. I am an 'accrual' taxpayer so I am paying taxes on my net 'on paper' business for the year while a 'cash' taxpayer pays taxes on what they have received during the year.
If I got a 1099 from Paypal I would NOT reflect it anywhere on my return because I have done no work for Paypal and they have only been a conduit for payments. I will check and make sure that it is somewhere near correct for the amount of money that has been deposited to them during the year, but those payments that are for mystery shopping will have already been reflected on my Schedule C for mystery shopping and if I have been an eBay seller I will need to consider a Schedule C for that business as well.