Last updated: 23 May 2026
“Gridwinner”, “we”, “us”, or “our” means Gridwinner, a trading name of Basil Paulose, a sole trader established in the United Kingdom. Our contact address is 41 Western Drive, Newcastle Upon Tyne, Tyne and Wear, NE4 8SQ and you can reach us at legal@gridwinner.com. “You” means the person or business using the Service.
By accessing or using Gridwinner (the “Service”) you agree to these Terms of Service, together with our Privacy Policy, Acceptable Use Policy, Disclaimer, Refund & Cancellation Policy, and Trademark Notice, which are incorporated by reference. If you do not agree, do not use the Service. If you use the Service on behalf of a business, you confirm you are authorised to bind that business.
Gridwinner is a local-first research and analytics tool for Amazon FBA wholesale and arbitrage sellers. It lets you upload supplier spreadsheets and third-party exports (for example Keepa, Helium 10, Jungle Scout, SmartScout, or Amazon files) and screen products using calculated estimates and scores. The Service is a research aid only; see clause 5.
You must be at least 18 years old to use the Service. Some features require an account. You are responsible for keeping your credentials confidential and for all activity under your account. Tell us promptly if you suspect unauthorised use. We use a third-party provider (Clerk) to manage authentication.
The figures, grades, scores, and signals the Service produces — including fees, profit, ROI, “Max Buy Cost”, sales estimates, the Alpha Score, A–D grades, and risk or eligibility flags — are automated estimates and heuristics, not statements of fact. They are provided for information only and are not financial, investment, tax, business, or legal advice and not a recommendation to buy or sell any product. You are solely responsible for your sourcing, pricing, and selling decisions and accept the risk of relying on the Service. Selling eligibility, gating, and restrictions are determined by Amazon — always verify in Amazon Seller Central before buying stock. Please read our full Disclaimer, which forms part of these terms.
You must use the Service only as permitted by these terms and our Acceptable Use Policy. Among other things, you must not scrape or access the Service by automated means, reverse engineer it, resell or redistribute it or its output, use it to build or benchmark a competing product, circumvent usage or tier limits, share your account, or upload unlawful, infringing, or malicious content.
Gridwinner is independent and is not affiliated with, endorsed by, or sponsored by Amazon, Keepa, Helium 10, Jungle Scout, SmartScout, or any other third party. Those names and marks belong to their respective owners and are used for identification only (see our Trademark Notice). The Service analyses files you export from your own accounts; we do not connect to or scrape those providers. You are solely responsible for complying with the terms, policies, and applicable laws of any marketplace you sell on (including Amazon’s Business Solutions Agreement and programme policies) and any data provider whose data you use (including your Keepa subscription terms).
Paid plans (“Pro”) are billed in advance on a recurring monthly basis through our payment processor, Stripe. Prices are shown on our Pricing page and may change on notice for future billing periods. You can cancel at any time and will keep access until the end of the period you have paid for. Your statutory cancellation and refund rights, including the 14-day cooling-off period and how it may be waived, are set out in our Refund & Cancellation Policy.
The spreadsheets you upload are processed entirely in your browser and are not uploaded to or stored on our servers. How we handle the limited personal data we do hold (such as your account email) is described in our Privacy Policy.
The Service — including its software, design, content, branding, scoring models, and know-how — is owned by us or our licensors and is protected by intellectual-property laws. We grant you a limited, non-exclusive, non-transferable, revocable licence to use the Service for your own internal business or personal purposes in accordance with these terms. You retain ownership of the data you upload and the outputs you generate for your own use. If you send us feedback or suggestions, you grant us a perpetual, royalty-free licence to use them without obligation to you.
The Service is provided “as is” and “as available”. To the maximum extent permitted by law, we exclude all warranties, conditions, and representations not expressly set out in these terms, including any implied warranty that the Service is accurate, uninterrupted, error-free, or fit for a particular purpose. We do not warrant any particular result, profit, or sales outcome. If you deal with us as a consumer, this clause does not affect your statutory rights, including under the Consumer Rights Act 2015.
Nothing in these terms limits or excludes our liability for:
Subject to the above, and to the maximum extent permitted by law: (a) we are not liable for any indirect or consequential loss, or for loss of profits, revenue, savings, business, goodwill, data, or any losses arising from your sourcing, purchasing, or selling decisions or your reliance on the Service’s estimates; and (b) our total aggregate liability arising out of or in connection with the Service and these terms is limited to the greater of (i) the total fees you paid us in the 12 months before the event giving rise to the claim and (ii) £100.
If you use the Service for business purposes, you agree to indemnify and hold us harmless from any claims, losses, liabilities, and reasonable costs (including legal fees) arising from your use of the Service, your sourcing or selling decisions, the data you upload, or your breach of these terms or of any third-party platform’s policies or applicable law. This clause does not apply to you where you use the Service wholly as a consumer.
You may stop using the Service and close your account at any time. We may suspend or terminate your access if you materially breach these terms or our Acceptable Use Policy, if required by law, or to protect the Service or other users. Where practical and lawful we will give you reasonable notice; we may act immediately for serious breaches or security risks. On termination, the licence in clause 10 ends; clauses that by their nature should survive (including 5, 10, 11, 12, 13, and 16) continue to apply.
We may update the Service and these terms from time to time, for example to reflect legal, security, or product changes. We will post the updated terms with a new “Last updated” date and, for significant changes affecting registered users, aim to notify you by email. Continued use after changes take effect means you accept them.
These terms and any dispute or claim arising out of or in connection with them or the Service (including non-contractual disputes) are governed by the laws of England & Wales. If you are a consumer, you benefit from any mandatory protections of the law of your country of residence, and nothing here affects those rights. We would like the chance to resolve any concern informally first, so please contact us at legal@gridwinner.combefore taking formal action. Subject to that, the courts of England & Wales have non-exclusive jurisdiction (a consumer may also bring proceedings in the courts of their home jurisdiction).
If any provision of these terms is found invalid or unenforceable, the rest remain in force. Our failure to enforce a right is not a waiver of it. We are not liable for failure or delay caused by events beyond our reasonable control (force majeure). You may not assign or transfer your rights without our consent; we may assign these terms (for example on a sale or reorganisation of the business). These terms are the entire agreement between you and us regarding the Service. A person who is not a party to these terms has no rights to enforce them under the Contracts (Rights of Third Parties) Act 1999.
Questions about these terms? Email legal@gridwinner.com.