I've just read this and I am at a total loss.

Here's how it works as a seller:

Let's say you have a designer handbag that you want to sell. The first step is to check if your item is eligible to be sold on eBay Authenticate by entering the brand, item type, and condition. If your item is eligible, you can then send it into eBay for authentication using a prepaid shipping label. From there, independent experts authenticate, price, and list your items for sale on eBay Authenticate. When your item is purchased, you get paid and eBay handles shipping the item to the buyer.

It's worth noting that eBay takes a 20% transaction fee when authenticated items are sold. Although that's quite a bit more than eBay's standard 10% transaction fee, it's worth it. You will find that the verified authenticity almost always makes it easier to sell your item, rather than listing it yourself — or using another avenue of sale. Buyers want to shop with confidence, and this is an easy way for them to do it.