# Quayline — Marine Supply Pricing Workspace

> Marine-supply offer modelling with volume, discount and margin checks using minor-unit arithmetic. Synthetic frozen snapshots; no ERP, payment, live quotation or contract execution.

- Canonical URL: https://khanway.co.business/
- Methodology & Equations: https://khanway.co.business/methodology/
- Interactive Browser Runtime: https://khanway.co.business/run/
- Author & Root Entity: Mohammad Rezwan Khan, PhD (https://mrkhan.co.technology/#person)
- Ecosystem Directory: https://mklab.co.technology/
- Knowledge Graph JSON-LD: https://khanway.co.business/knowledge-graph.jsonld

## Governing Mathematical Formulation & Units
- Formula: `Net Revenue (cents) = Σ [ Quantity (L) × Unit Price (cents/L) × (10,000 − Discount_bps) / 10,000 ] × (10,000 − Rebate_bps) / 10,000; Margin (%) = (Net Revenue − Total Cost) / Net Revenue × 100`
- Units: Volume in litres (L); prices and revenue in integer USD minor units (cents); discounts and rebates in basis points (1 bps = 0.01%).

## Reproducible Worked Example
Case 1 (Bulk Marine Offer, 30-day payment terms): 1,000 L at 185 cents/L ($1.85/L) with 0 bps line discount and 0 bps rebate yields Net Revenue = 185,000 USD cents ($1,850.00). Against synthetic supply & port cost of 234,000 USD cents ($2,340.00), Profit = -49,000 USD cents (-$490.00) and Margin = -26.49%, triggering the margin-floor review warning.

## Benchmark Table
| Case ID | Volume (L) | Unit Price (cents) | Discount (bps) | Net Revenue (cents) | Profit (cents) | Margin (%) |
| --- | --- | --- | --- | --- | --- | --- |
| Case 1 (Baseline Bulk) | 1,000 | 185 | 0 | 185,000 | -49,000 | -26.49% |
| Case 2 (Volume Tier) | 5,000 | 210 | 150 | 1,034,250 | 114,250 | +11.05% |
| Case 3 (Rebate Contract) | 10,000 | 198 | 200 | 1,940,400 | 190,400 | +9.81% |

## 5-Domain Core Authority Ecosystem
1. Hub & Authority: https://mrkhan.co.technology/ (Mohammad Rezwan Khan, PhD - BESS QA/QC & Energy R&D)
2. Interactive Course & Twin: https://khanlab.co.technology/ (Datacenter Power Systems & What-If Simulator)
3. Microgrid Research: https://mkgrid.co.technology/ (HelioForge Energy Lab - Hybrid Energy Research)
4. Synthetic Energy Trading: https://mktrade.co.business/ (ZephyrTrade - Wind-Market Synthetic Backtesting)
5. Utility & Tool Suite: https://mklab.co.technology/ (MKLab - 68 Free Browser Engineering & Planning Apps)