Discount margin impact & break-even units API

Compute net price after a discount, margin erosion, and the break-even unit multiplier (oldUnitMargin / newUnitMargin) needed to hold gross profit flat. Deterministic. Answers 'how many extra units must I sell to break even on a discount','what does a 20% discount do to my margin'.

Price$0.01per request

MethodPOST

Route/v1/calc/ecom-discount-impact

StatusLive

MIME typeapplication/json

Rate limit120/minute

CacheNo cache

ecomdiscountmarginpricingbreakevenpromotionecommercecalc

API URLhttps://x402.hexl.dev/v1/calc/ecom-discount-impact

Integration docs

Example request

{
  "listPrice": 100,
  "unitCost": 60,
  "discountPercent": 20,
  "baselineUnits": 1000
}

Example response

{
  "formula": "netPrice = listPrice × (1 − discount); breakevenUnitMultiplier = oldUnitMargin / newUnitMargin",
  "listPrice": 100,
  "unitCost": 60,
  "discountPercent": 20,
  "netPrice": 80,
  "oldUnitMargin": 40,
  "newUnitMargin": 20,
  "newMarginPercent": 25,
  "marginErosionPercent": 50,
  "breakevenUnitMultiplier": 2,
  "extraUnitsPercentNeeded": 100,
  "baselineUnits": 1000,
  "breakevenUnits": 2000
}

Input schema

{
  "type": "object",
  "required": [
    "listPrice",
    "unitCost",
    "discountPercent"
  ],
  "properties": {
    "listPrice": {
      "type": "number",
      "examples": [
        100
      ]
    },
    "unitCost": {
      "type": "number",
      "examples": [
        60
      ]
    },
    "discountPercent": {
      "type": "number",
      "description": "0-100",
      "examples": [
        20
      ]
    },
    "baselineUnits": {
      "type": "number",
      "description": "Optional baseline units to compute break-even units",
      "examples": [
        1000
      ]
    }
  }
}

Output schema

{
  "type": "object",
  "additionalProperties": true
}