How much does left luggage at charing cross station cost?

The standard fee for left luggage is GBP6.50 per item.

The left luggage office is just outside the glass doors at the main station entrance.

Apparently £6.50 per item per 24 hours - see http://www.nationalrail.co.uk/stations/WAT/details.html

£6.50 per 24 hours per item

Luggage sets can be cheap or very expensive depending on the brand and the number of pieces. Usually you can get a good set for about 200.00 for 3 or 4 pieces.