Right, bands are manufactured all the time and then discontinued within months most times. (Especially third party bands). I would search EBay for bands that _resemble_ that specific band by a different product name, and see if it produces any similar results.
+1 for the Spigen rugged armor. I bought the band and case. Don't care for the case (or any case due to scratches on watch finish). But then I bought ANOTHER spigen band as backup. Very G-shock looking in heavy rubber. And very importantly NOT a lint magnet like cheap silicon bands. Here is a link for case and band it appears, with the band only being unavailable. I would get two: