When selling the same product to different buyers, we have to manually change prices and terms each time. Is there a way to avoid redoing this work every time?

Yes. The approach is to set up "quotation terms, price brackets, and payment methods specific to each customer" in advance. After that, these conditions are automatically applied when you create a quotation each time—no need to rewrite them. Specifically, you can define the product range visible to each buyer, the applicable MOQ tiered prices, payment terms, and currency. The same product data can then generate completely different quotation versions for different buyers without creating a new document each time. Besides saving time, this approach reduces the risk of manual entry errors and keeps all changes traceable.