I think this has been mentioned before, the disparity between Helm and Princeton, I can only assume that it has something to do with UK tax law?Assuming this refers to me. I'll have to wait till February to be able to judge this. Had ordered mine after switching to the Princeton edition. The reason I switched was because Book Depository suddenly wanted a considerably higher price for my Helm copy that I already had in the shopping basket. Though later on, they reverted to the lower price. But by then I had already placed my order.