@ fantasticbaggie. I've made a separate entry which features the same barcode, but my edition is from 2014 and features no price on the back cover. Also the 1997 edition I'm guessing would be the first edition paperback.
Added images for the 2004 edition. It appears to be same as the 1997 edition except for a change in price. If not, please advise and I will make a separate entry.