I appreciate that a seller would be spending time and fuel to hand deliver but I can see where a buyer might feel ripped off with postage costs. They don't necessarily know where a seller lives, they might figure that if they paid eg $13 postage and the person lived close by, that person made a profit out of the postage.
Plus it might be a bit of a personal intrusion.
I would be pretty sure one of the massive reasons people buy eg small items & second hand clothes on ebay and not gumtree is because of the convenience of having things delivered plus it is impersonal and private, they don't have to face the seller. Back in the day when my sister & I sold a lot, we allowed pick up and a couple of times people arrived to say they were picking up for a 'friend' when it was pretty obvious it was most likely for themselves, but they felt awkward.
As a seller, I once hand delivered a small, fragile item. I had it all wrapped for post but was a bit worried so drove over that way-and popped it into their letter box. There is no way I would have knocked on their door.
I did send a message to them to say what i had done and why.
In actual fact, I had gone about 10 minutes out of my way. Back then the postage was very low anyway so it wasn't a big issue.
My buyer was rapt and gave me great feedback, but these days I would be cautious and ask first or else leave in letterbox, perhaps with partial postage cost refund in an envelope if it had been a bigger amount. Everyone loves a discount.
