anyone know why, or how DRC is so much cheaper at release via L CBO vs rest of the world?
No secondary market. The retail price at the KGBO is based on a formula. The markups, etc. are applied to whatever price they get or manipulate ex-domaine. The downside to the more favourable price is the Soviet era type rationing that happens, meaning that you only get a bottle when the commissars decide you are worthy of one.