Guthix armour set (lg): combine or split profit

The GE clerk swaps the Guthix armour set (lg) for its 4 pieces and back for free, so any price gap is profit. Buying the pieces costs 165,337 gp and the set sells for 190,880 gp; buying the set costs 200,926 gp and the pieces sell for 150,823 gp. Right now the better play is to combine, for +21,726 gp per set after the 2% GE tax. The set traded 74 times in 24 hours.