Rune armour set (sk): combine or split profit

The GE clerk swaps the Rune armour set (sk) for its 4 pieces and back for free, so any price gap is profit. Buying the pieces costs 128,684 gp and the set sells for 128,200 gp; buying the set costs 137,000 gp and the pieces sell for 127,977 gp. Right now neither direction pays: the better one, combine, comes out at -3,048 gp per set after the 2% GE tax. The set traded 57 times in 24 hours.