What Is Oil? indeed. This must be the very best grade. This single rarely bruises the £20 mark. I've seen it sell on ebay twice and I won it the second time for about £16. And yet some maniac pays £93.55 for it. This highlights the insanity of ebay. Seller Modboy 1 has an impeccable ebay history and anything he sells usually generates a flurry of interest but he must have been overcome with glee when he raked in nearly £100 for this decidedly average effort.