then what is then? on ebay there is no way to scam because if payment is not given or item is not given then paypal/ebay will easily sort it out its better than using a retarded middleman who scams
If you were too use a middle man I'd suggest using Techno. He middle man's alot of high quantity deals and can assure you don't get scammed. While using eBay it is risky since the person can claim they have never received the product/ or services.
In the end all ways are risky, it's what way you trust the most.