Dancers wielding giant Tunnock's teacakes were one of the hits of the opening ceremony for the Glasgow 2014 Commonwealth Games. But how much are they worth now? £1,605 each.

At least, that's the value of a single teacake prop sold off on the Games' official auction website this week. In two days online, it attracted 108 bids, including the winning bid of £1,605.

(Or, to put it differently: the price of 1,000 boxes of 10 regular-size teacakes. Although none of them would come with a "commemorative metal tag" with a hologram of the Games logo.)

The organisers are using the official auction website to sell various pieces of memorabilia from the Games, including chairs, fishing boats, an Edinburgh cannon and even a flushing toilet from the opening ceremony.

More giant teacakes are also being auctioned off, with current highest bids of £405 and £210 with one and two days to go respectively.

It's not just the organisers cashing in. Sales of the actual teacakes rose sharply after their starring role in the opening ceremony, with Waitrose announcing that sales rose 62% in the 24 hours afterwards.

Tunnock's gave permission for its teacakes to appear in the ceremony, which at its peak was watched by 9m viewers in the UK. The company has said that it did not know exactly how they would be used.

"We were blown away by the exposure, and we felt quite humbled that the producers of the ceremony felt that the brand merited the exposure," said operations director Fergus Loudon.

• Commonwealth Games 2014: opening ceremony – as it happened