Estimate your monthly eBay income by entering your average sale price, volume, and costs.
Example: 100 sales/month at $46 average = $4,600 gross. After ~$640 fees, $1,200 item costs, $500 shipping = $2,260 net/month ($27,120/year).
This tool is most useful during planning and review cycles: setting targets, evaluating performance, or comparing options. Standardised metrics make comparisons across periods or business units reliable.
A common mistake is comparing metrics that use different definitions — gross margin versus net margin, revenue versus profit, customer count versus paying customer count. Always confirm the definition of each input before comparing results across periods or sources.
A startup founder uses the calculator to determine break-even point: fixed monthly costs $12,000, variable cost per unit $18, selling price $42. Break-even is 500 units per month — a concrete sales target that the team can evaluate against pipeline and capacity.
Part-time sellers average $500–$2,000/month. Full-time power sellers often earn $3,000–$10,000+/month net profit.