I Must admit i find this odd. I googled it and it sort of says When a price is quoted as "plus VAT" in the UK, it means that the advertised price does not include VAT. The VAT must be added to the given price to understand the full cost. For businesses, this is a common practice as they list prices without VAT, expecting that other businesses can claim the VAT back.
Now this is very odd due to selling on ebay with this fixed price the image shows the price you pay so in my mind hes being naughty or i've lost it, if i,m a regular person, none business and orders that engine at £1650 as i,m not a vat registered business I don't pay it.
the postage free part I got wrong, it means collection but he charges for postages which is ok t do.