# productize.co > Founder coaching with Alex McClafferty. Alex co-founded WP Curve and sold it to GoDaddy, and he has coached founders of service, software and AI businesses since 2015. The site has a free business valuation calculator, articles on scaling and selling a company, and long interviews with founders. ## Business valuation calculator - [Business valuation calculator](https://productize.co/business-valuation-calculator/): What a buyer might pay for an agency, a productized service, a consultancy or a software business. Twelve questions give a worst case, a base case and a best case, in US dollars. The page states the full method, the starting multiples, the score for every answer and the sources. - [The calculator page as Markdown](https://productize.co/business-valuation-calculator.md): The same questions, method, tables and worked examples as plain text. - [The answer at a web address](https://productize.co/api/valuation): The address takes a business's numbers and returns the three cases as Markdown, or as JSON with format=json. Example: https://productize.co/api/valuation?type=agency&revenue=1200000&profit=180000&owner_pay=150000&growth=up&recurring=mid&top_client=mid&founder=22121 - [The figures as a data file](https://productize.co/data/valuation-multiples.json): Every table behind the calculator, with a date and a change log. - [OpenAPI file](https://productize.co/api/openapi.json): The same address, described for tools. - [Connector for Claude and ChatGPT](https://productize.co/business-valuation-calculator/connector/): An MCP server at https://productize.co/mcp with one tool, value_business. It needs no sign-in. Facts about the calculator: - The address needs three things: the kind of business, the revenue and the profit before tax, each for the last 12 months. The owner's pay and the other answers are optional, and a missing one takes the middle answer. - All figures are US dollars. The sale data is from the US. - The result is an estimate from published sale prices. It is not a formal valuation. - The priced list of fixes is in a free report, which the calculator page sends by email. The address does not return it. - Each answer from the address includes a link to a page that shows the same result. ## Coaching - [Founder coaching](https://productize.co/): Who Alex coaches, what the work covers and how to book a free 25-minute call. - [Coaching client results](https://productize.co/results/): Client videos and written testimonials, with the companies that were acquired. - [Press](https://productize.co/press/): Interviews, talks and articles. - [Tools](https://productize.co/tools/): The free tools on the site. ## Articles - [105 due diligence questions to help you maximize your exit value](https://productize.co/articles/105-due-diligence-questions/): A 105-question self-audit, organized into 7 categories, to anticipate buyer scrutiny and raise your exit valuation before you go to market. - [What they don't tell you about selling your startup](https://productize.co/articles/selling-your-startup/): I sold WP Curve to GoDaddy. The books, blogs and bankers didn't teach me these seven lessons about selling your startup. - [Can you sell your consulting business?](https://productize.co/articles/sell-consulting-business/): Probably not. A buyer's due diligence questions show why consulting firms rarely sell, and why productized services sell for a multiple of revenue. - [Why your consulting business won't scale and what to do about it](https://productize.co/articles/scale-consulting-business/): Hiring a junior consultant cuts your pay and doubles your work. Four ways out of the consulting trap: software, a course, a book or a productized service. - [Why consulting sucks (and how to RESCUE yourself from it)](https://productize.co/articles/why-consulting-sucks/): Three questions that expose the consulting business model, and the RESCUE checklist I use to judge if a productized service is worth building. - [How to self-fund your business with annual plans](https://productize.co/articles/how-to-self-fund-your-business-with-annual-plans/): Ask customers to pay for the year up front. What share of customers will take an annual plan, how to price it and how it funds a subscription business. - [A comprehensive list of subscription churn drivers and solutions](https://productize.co/articles/subscription-churn-drivers/): Ten causes of churn in SaaS and productized services, with a practical fix for each: zombie customers, no downgrade option, half-baked onboarding and more. - ["We don't really know who our customer is..."](https://productize.co/articles/who-is-my-customer/): Every founder loses sight of the customer at some stage. Why it happens, the obvious fix (go and meet them) and eight questions to ask when you do. ## Interviews with founders - [Brigitte Lyons: how she built, closed and sold Podcast Ally](https://productize.co/articles/brigitte-lyons/): Brigitte Lyons ran Podcast Ally from an off-grid trailer, closed it, then sold it. She talks capacity, one-to-ones and marketing. Audio and full transcript. - [Sam Shepler: how Testimonial Hero hit $5M without MRR](https://productize.co/articles/sam-shepler/): Sam Shepler grew Testimonial Hero past $5 million a year without chasing MRR. He talks lifetime value, cash and buying competitors. Audio and full transcript. - [Jake Jorgovan: from solo consultant to three companies](https://productize.co/articles/jake-jorgovan/): Jake Jorgovan built Lead Cookie and Content Allies. He talks market validation, going upmarket, layoffs and the hires he got wrong. Audio and full transcript. - [Ray Corcoran: agency pipeline, content and pricing lessons](https://productize.co/articles/ray-corcoran/): Ray Corcoran runs Groe, a Sydney marketing agency. He talks pipeline, posting for the right customers, pricing and a big mortgage. Audio and full transcript. - [Justin Tan: hiring a GM instead of selling Video Husky](https://productize.co/articles/justin-tan/): Justin Tan founded Video Husky, lost 30% of revenue overnight in COVID and hired a general manager instead of selling in 2021. Audio and full transcript. - [Craig Hewitt of Castos: why a $19 SaaS is the hard road](https://productize.co/articles/craig-hewitt/): Craig Hewitt runs Castos, a podcast host and production service. He talks $19 pricing, churches, burnout and an offer he turned down. Audio and full transcript.