I've never seen anyone actually buy a scabbard from Albion before... But high end scabbards do cost about that much, depending on what you get on them. A nice, highly decorated period scabbard requires several skilled crafts to complete, sometimes woodwork, leatherwork and metalwork (and not apprentice level in any of those disciplines). If all one is after is a simple leather sheath for a sword, then you don't have to worry about those high prices, but for a wood-core scabbard, hand stitched leather overwrap with fine carving and decorative brass or precious metal work (and then again for the belt), expect to pay similar prices to the sword itself.