You really are hung up on the "value of an item rubbish". When we recently sold some items (total value less than $10) which we listed up front with the option of registered or regular post the buyer chose regular post, paid by paypal, received the items then gave negative feedback for excessive post cost. They choose and we still get burnt.

It is paypal policy that items paid through paypal must be sent by registered post for seller protection but when the buyers CHOOSE regular post then that is THEIR choice whether it is $10 or $1000 so if the buyers then charge back who is responsible?

We have refused paypal payments when some buyers try this and now we get proof of purchase on ALL posted items. It may take longer and be more work but as good sellers we have had many very poor dealings with dishonest buyers.

Some items may not have a high monetary value but will be worth lots to a collector which is often the case with myself and I will pay for premium postage even if I haven't paid a premium for the item.

If the AP lodgement receipt forms are used/filled out correctly then it will have the tracking number, persons name, persons complete address and any extra cover purchased.

Senders details are at the top and date at bottom as well as Post Office post mark which shows the date items sent.

This is enough for satisfying paypals requirements for proof of postage, what happens then is NOT the responsabilty of the sender.