Thank you so much for this! I just tested this out and got it to do exactly what I needed!
Thank you again!
Topic summary
Main issue: A plushie seller needs shipping to scale up when customers buy multiple items, since each plushie ships in a bulky gift box. Single-item shipping runs about $6–$8, while three items cost about $17 via a USPS flat rate box.
Key constraint: Shopify cannot set flat shipping rates directly by item quantity.
Solution proposed: Use weight-based shipping tiers to approximate quantity-based pricing. Example setup: 0–2 kg = $10; 2–4 kg = $20. Assign a fixed weight per plushie (e.g., 2 kg) so the cart’s total weight triggers the appropriate tier (two items would show $20, etc.).
Outcome: The seller tested the weight-based approach and confirmed it works for their needs.
Status: Resolved. No outstanding questions or actions noted.