Click and send vs Ebay postage labels

I am totally confused by click and send.

Are there any advantages to using click and send over the ebay postage label print service for a non business registered seller?

For a 500g satchel it still looks like Ebay is cheaper (even with added final value fees on postage)?

The only reason I'm looking at Click and Send is because it appears you can drop parcels off via Parcel lockers (which I don't think you can do with Ebay postage), which is appealing to me as I'm a shift worker so can't always get to a post office during business hours.

Any advice would be most appreciated.

Thank you