Not sure, but my guess would be that they'll ask for a holding deposit if you agree to purchase via email and then disappear with your money.
The 'buy it now' prices are just too low to be credible. £7k for a 1965 Lotus 7, really?
https://www.ebay.co.uk/itm/144307371...8AAOSwliNhoPdV
There are also Porsches, Bentleys and even a Ferrari 360 Modena, which also just happens to be for sale at £7k. I'll take two...