They are ok, so long as NOTHING goes wrong
I sold a Roku 3 on the rain forest. Sent it via Collect+ through the sellers screen and got the tracking number. The delivery tracking showed it had arrived ok.
The buyer says nothing arrived, no card, no signature.
I phoned up Collect+ who said they have to phone the depot and interview the driver. I chased up everyday for a week and kept getting the run around. In the end they said the depot wouldn't answer the phone.
The buyer ended up filing a dispute case and the rain forest said even though the tracking page showed that it had been delivered, there was no proof the buyer had received it. Ended up loosing £80