Fortunately good and trusted wine retailers continue in the majority and are usually only to willing to convey you friendly advice.
A case of wine is almost always less expensive per bottle than buying each bottle individually. https://groundhook6.bloggersdelight.dk/2024/06/05/huong-dan-nhan-ra-ruou-hennessy-v-sop-xo-thiet-gia-topwine/