LOGIC:High gross margins (estimated 75%) are achievable due to the significant value proposition (40% IHT mitigation on multi-million-pound assets) and premium pricing model (transaction-based fees of 2-5% of tax saved, or bespoke project fees starting at £150k, plus annual SaaS subscription of £75k+). However, London's operational costs are acutely high. Key drivers include: * **Labor (50-60% of revenue)**: Senior AI/ML engineers and data scientists command £150k-£250k+ annually, while specialist tax solicitors and art historians/valuers easily exceed £200k-£300k, demanding substantial equity. * **Rent (5-10% of revenue)**: A discreet, credible client-facing office in Mayfair or St. James's (e.g., a serviced office suite in Berkeley Square for £8k-£15k/month) is essential for UHNW trust, though core development could be in more affordable tech hubs like Shoreditch (£75-£95/sq ft). * **Compliance & Legal (5-8% of revenue)**: Continuous legal counsel on IHT law, Cultural Gifts Scheme nuances, data privacy (GDPR), and potential FCA oversight adds significant ongoing expense. * **Data Acquisition (3-5% of revenue)**: Licensing high-quality, real-time auction data from major houses (Christie's, Sotheby's) is critical for the predictor's accuracy and carries substantial annual fees. Profitability is contingent on securing high-value mandates frequently enough to offset these exceptionally high fixed and variable costs, making scalability challenging without significant upfront investment.