Meaning of BIN, A4, B1

[jenni_orchid]

I am thinking of ordering some plants, and the descriptions include terms like BS, A4, B4...... What is this, please?

[Orchid Whisperer]

I assume these are Ebay or similar listings. BIN = Buy it now.

Not sure about A4, B1, . . .

[3rdMaestro]

BS= blooming size. It's old enough to bloom but usually is not currently in bloom. NBS= near blooming size. Usually needs a year or two before it's ready to bloom. In some cases it may be ready by its next bloom cycle. I forget what seedling is. Perhaps SD?

[jenni_orchid]

Thanks to y'all. It makes sense now. This is such a great helpful forum, and the members are so knowledgeable. I really appreciate all the help.