As long as you're using our cart buttons (not Buy Now buttons), then in Seller Admin > Cart Discounts & Gift Coupons you can set up a series of product-specific discounts, with the Discount Code left blank (so the discount applies automatically), requiring a Min. Item Quantity threshold to be met for that item to apply the discount. Each discount you create for that product with a next-higher Min. Qty. threshold will override any discounts with a lower Min. Qty. threshold for the same product.

Oh, one more thing: make sure you give each Discount a unique Discount Name, as that's what we use to keep track of which discount is which -- e.g., you could have Names like "Widget qty 3-5", "Widget qty 6-10" etc.



Once you Submit the first discount in your series, the settings you'd just saved will remain visible, so you can simply modify those settings (e.g. change the Name and Min. Qty.) and then hit Submit to save the next discount, lather rinse repeat. :^)