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Please refer to Photography Pricing Rationale & Market Context for market research and pricing rationales

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ChatGPT - Photo Pricing Strategy HK

Photography Pricing Guide – That Space

Photography Pricing Guide – That Space (v4, May 2025)

Latest constants (HKMF_open 0.55 · HKMF_ltd 0.88 · e 0.80 / t 0.30) – ready for Notion import

1 · Edition & Pricing Matrix (Unframed · HKD)

Size Standard Edition Tiered Option¹ Open Edition² Base Price Frame Add‑on
A2 (42 × 60 cm) 25 5 — 1 500 +700‑800
A3+ (33 × 48 cm) 25 10 — 1 250 +550‑650
A3 (30 × 42 cm) 25 15 — 1 000 +500
A4 (21 × 30 cm) 25 25 — 700 +300
A5/A6 & merch — — Unlimited 30‑120 n/a
  1. Tiered (recommended): 5 A2 · 10 A3+ · 15 A3 · 25 A4 ⇒ 55 total prints.
  2. Open edition only for postcards, posters, tees, digital.

Escalator: add +10 % after every 5 sales within an edition (prints #6‑10, etc.).

2 · Master Pricing Formula – Baseline + Scarcity Premium

BaseOpen = HKMF_open × Base₍A4₎ × M_size × PhotoFactor
Premium  = (HKMF_ltd - HKMF_open) × Base₍A4₎ × M_size × PhotoFactor
           × (25 / Run)^e × (75 / TotalRun)^t
Price    = BaseOpen + Premium            // Run → ∞ ⇒ Price = BaseOpen
Constant Value Purpose
Base₍A4₎ 700 HKD Launch price for A4 limited print
HKMF_open 0.55 Décor/open‑edition factor
HKMF_ltd 0.88 Limited‑edition factor (≈15–20 % under Blue Lotus)
e / t 0.80 / 0.30 Scarcity weights
M_size A4 1 · A3 1.67 · A3+ 2 · A2 2.5 · A1 4 · A0 6 Size multipliers
PhotoFactor 0.8 – 1.75 Content / craft / demand slider

Example – 40 × 75 cm print (Run 8, TotalRun 18, PF 1)

BaseOpen = 0.55 × 700 × 2.5  ≈ 963 HKD
SE       = (25/8)^0.80 × (75/18)^0.30 ≈ 3.13
Premium  = (0.88 – 0.55) × 700 × 2.5 × 3.13 ≈ 1 730 HKD
Price    ≈ 963 + 1 730 ≈ **HK $4 670**   // ~19 % below Blue Lotus HK $5 800

3 · PhotoFactor Sliders

Dimension Range Trigger examples
Visual Impact 0.90–1.20 Composition, light, colour pop
Subject/Moment Rarity 0.95–1.25 Unrepeatable scene, historic moment
Production Craft 1.00–1.25 Hand‑tint, alt‑process, deluxe paper
Market Heat 1.05–1.30 Press feature, viral buzz
Cap combined factor ≤ 1.75.