This niche e-commerce business provides a simple, reliable way for laboratory managers to source and order third-party replacement UV and fluorescent bulbs for specialized lab equipment, operating with low overhead, consistently positive monthly performance, and profitability driven mainly by customer purchasing cycles and inventory timing rather than fixed costs, resulting in cash-flow positive operations and strong margins over the full period. Key Highlights ✅ Niche e-commerce business serving laboratory managers ✅ Streamlined ordering of third-party UV and fluorescent replacement bulbs ✅ Low-overhead operating model ✅ Consistently positive operating months overall ✅ Revenue variability driven by customer timing and inventory purchases, not fixed costs ✅ Cash-flow positive across the full operating period ✅ Strong margins maintained over time