Some people have been cashing in on the Queen's lying in state by selling used wristbands for up to £350.
Those joining the queue receive coloured wristbands to mark their place - so they can leave for a drink, or to go to the toilet, and then return.
But it appears that some mourners have seen the system as an opportunity to make some cash by selling the wristbands as souvenirs on eBay.
One person has listed an orange wristband, which features the abbreviation LISQ (Lying In State Queue), with an asking price of £350.
Small print on the paper band specifies that it does not guarantee entry and is strictly non-transferable. But in the description the seller has listed it as 'brand new' and 'never been used'.
Another seller has listed a similar wristband for £100, while a third person is selling a yellow band - plus a bundle of commemorative newspapers - for £122. A fourth seller has put their ripped green band on the site for £100.
The item was accompanied by the description: 'Previously used or worn orange wristband from the first 24 hours of the Queen Laying-In-State in Westminster Hall. This wristband gained entry to the original wearer to pay their respects to Queen Elizabeth.
'This is a piece of history. A small piece yet still a piece of history and this is your chance to own it if you did not have the chance to come yourself.
'The queue to pay respects to the Queen Lying-In-State may be London's longest. It took 7-8 hours from joining the queue to finally pay respects to the late Queen.'
The seller said they were happy to send the item internationally but specified that it was being sold as 'historical memorabilia only.'
They stressed that 50 per cent of the final profit will be donated to the British Red Cross which Queen Elizabeth was the longest serving patron of.
Another person is trying to flog their orange wristband for the slightly lower price of £82.
The cheapest band currently listed on the site is up for grabs for £10.
The seller promised to donate 20 per cent of the final price to The Dogs Trust to reflect the Queen's love of animals.
Official guidance published by the government states: 'When you reach the back of the queue, you will be given a coloured and numbered wristband.
'This is a record of when you joined the queue, however please note that having a wristband does not guarantee your entry to the Lying-in-State.
'Wristbands are specific to each person joining the queue, and are strictly non-transferable. You must keep this wristband on at all times as it will be checked along the route.
'Your wristband also allows you to leave the queue for a short period to use a toilet or get refreshments, then return to your place in the queue.'