Dagon'hai robes set: combine or split profit

The GE clerk swaps the Dagon'hai robes set for its 3 pieces and back for free, so any price gap is profit. Buying the pieces costs 1,141,496 gp and the set sells for 1,120,010 gp; buying the set costs 1,139,000 gp and the pieces sell for 1,045,000 gp. Right now neither direction pays: the better one, combine, comes out at -43,886 gp per set after the 2% GE tax. The set traded 153 times in 24 hours.