| What it does | Find the month you can stop saving for retirement
| Free Amazon FBA calculators and seller tools with verified 2026 fee rates
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| Stage | Not given
| Startup
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| Founded | Not given
| 2026
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| Based in | CA
| CN
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| Pricing model | Free
| Freemium
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| Pricing | Not given
| Free core tools with no signup. Pro plan: $29.99/month or $299/year (save 17%). One-time fee audit service: $299 for up to 50 SKUs, $4 per extra SKU.
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| Key features | - Shows the exact month you can stop saving
- Runs 1,000 simulated markets to show odds of success
- What-if scenarios for savings, returns, and fees
- Accounts for investment fees and contribution raises
- Share links to compare plans with others
- No sign-up required
- Calculations run in browser, data not stored
- Shows formulas and assumptions transparently
| - FBA Profit Calculator with all hidden fees
- PPC Analyzer for ACOS and ROAS calculation
- Fee Simulator comparing fulfillment methods
- Listing Grader with optimization tips
- Review Analyzer for competitive insights
- Inventory Optimizer with restock alerts
- Cost Tracker for expense management
- Real-time exchange rate conversion updated every 5 minutes
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| What makes it different | - Answers when you can stop saving, not just how much you need
- No sign-up, no data stored, free to use
- Shows odds of success with Monte Carlo simulations
- Plain language explanations without financial jargon or hype
| - 50+ free tools with no signup, login or credit card required
- Fee rates verified monthly with open-source data published under CC BY 4.0
- Built by an 8-year Amazon FBA seller addressing real seller pain points
- Supports multiple marketplaces: Amazon US/EU/UK/JP/CA/AU, Temu, TikTok Shop, and Etsy
- Transparent formulas using industry-standard calculations verifiable by users
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| Community votes | 0 | 0 |
| DR (Domain Rating by Ahrefs) | 2 ▼ −1 (down) since last check | 23 ● no change since last check |
| Trust Flow (Majestic) | 0 | 0 |
| Citation Flow (Majestic) | 16 | 16 |
| Referring domains (Majestic) | 2 | 10 |