Eclipse glasses cost the Earth - Retailers asking for up to £500 for pair of safety specs

Some are asking as much as £500 each for the cardboard viewers in the run-up to the rare event on Friday morning.
The glasses are fitted with essential dark filters to stop the sun’s radiation from damaging the eyes.
Only the sun is bright enough to be seen through them.
They usually cost just about £2 and have been given away with some stargazing magazines.
But as telescope shops run out of supplies, stores on eBay in the UK were offering them at massive mark-ups yesterday.
It will be the biggest eclipse since 1999 with 84 to 95 per cent of the sun blotted out by the moon.
The eclipse won’t leave the UK in total darkness – more like at sunrise on sunset.
Robin Scagell, of the UK’s Society for Popular Astronomy, said: This is the great eclipse rip-off.
"These items cost only a few pence to make.