It's difficult to say for sure without more context, but based on the information provided, it's possible that "BMW with no ETA" could mean that the curtains you are interested in purchasing are not yet available for the BMW G05 model, and there is no estimated time of arrival (ETA) for when they will become available. ETA is a common acronym used in the retail industry that stands for "estimated time of arrival." It refers to the expected date or time when a product will be available for purchase or delivery. If the store doesn't have an ETA for the curtains you are looking for, it could mean that they are currently out of stock or that the manufacturer has not yet released them for sale.JTWhatsapp However, it's also possible that "BMW with no ETA" could mean something entirely different depending on the context of the conversation. If you're unsure, it's best to ask for clarification from the store to avoid any confusion.