🚚 Tier Shipping Extension (Ground & Standard Only)
📍 Location
Magephoenix → Tier Shipping Prices
🧠 Overview
| Rule | Explanation |
|---|---|
| Applies only when product is alone in cart | If multiple products → normal shipping applies |
| Works only for Ground & Standard | Other methods unaffected |
All values = 0 |
Feature is OFF |
⚙️ Basic Configuration
🔑 Enable Feature
| Setting | Value |
|---|---|
| Enable | Must be set to YES |
📊 Pricing Variables
| Setting | What it does | Example |
|---|---|---|
| Starting Qty | Max qty for base price | 20 |
| Starting Price | Shipping price up to starting qty | $10 |
| Increment Qty | Step size after starting qty | 10 |
| Increment Price | Price added per increment | $0.5 |
🧮 How Calculation Works
Example Setup:
| Setting | Value |
|---|---|
| Starting Qty | 20 |
| Starting Price | $10 |
| Increment Qty | 10 |
| Increment Price | $0.5 |
📦 Resulting Prices
| Ordered Qty | Shipping Price | Explanation |
|---|---|---|
| 1 – 20 | $10 | Base price |
| 21 – 30 | $10.5 | +1 increment |
| 31 – 40 | $11 | +2 increments |
| 41 – 50 | $11.5 | +3 increments |
| 100 | $14 | $10 + (8 increments × $0.5) |
🎯 Use Cases
| Scenario | Solution |
|---|---|
| Bulk orders cheaper per unit | Use increments |
| Flat shipping for small qty | Set starting range |
| Gradual price scaling | Combine both |
⚠️ Important Notes
- Only works if:
- product is alone in cart
- Only affects:
- Ground
- Standard
- Other shipping methods:
- behave normally
🎥 Example Scenario
Goal:
- Ground shipping = FREE
- Standard shipping = DISABLED
👉 Configure:
- Ground → price =
-100(free) - Standard → set values to disable or leave unused
🧠 Dev Notes
- Logic depends on full increments only
- Partial increments are rounded down
- Feature overrides base shipping pricing
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