Finding 月のうさぎ by Chie Hanawa

Does anyone know why Chie Hanawa’s first solo album, 「月のうさぎ」 (sometimes called Soleil in English :woman_shrugging:t2:) is unavailable digitally? Colombia Nippon links to https://recochoku.jp/ however only two songs out of twelve are available.

ETA: Decided to go through Yahoo Japan Auctions. :money_with_wings::money_with_wings::money_with_wings: