U r basically just purchasing items legally with a debit/credit card or PayPal you own after u receive the items at your address.
U can hire a refunder for a % or do it yourself if u are experienced.
After Refund goes through u will get the funds reversed to your payment method.
NB: U don't have to return the items u purchase. Some sites can only be hit once.
If refund fails u can return the item legally and get your money back still.
I have done refunding before on Apple i bought some Air Pods and got a refunder to do it. I never returned the product and funds were reversed to my account.
Some websites have insider's " Employee's working with Refunders" Refunder will request refund and the insider will approve the request.
FAKE TRACKING ID (FTID) is a term used to describe a refund scam where the refunder fakes the status of the return tracking number.
There are different methods such as the ones above.
Each website is different with their policy so not all methods work on all websites.