As of 13 August 2026, AI can choose a monthly or annual subscription price.

What to actually do

1. Use a tool built for this

   The route this page recommends

2. Do it yourself

   Second choice

   A chat interface, chat-fluent skill, and roughly 30 minutes until you can act on the result.

   How to actually do it

   1. Open a spreadsheet and record the product cost, payment fees, support cost, fixed cost allocation, current price and VAT treatment in GBP.
   2. Gather your current sales, renewal, cancellation and usage records, removing customer names and other unnecessary personal data before sharing any extract.
   3. Collect the competitor prices you can verify from their current UK-facing pages and paste the links, dates and relevant plan details into the spreadsheet.
   4. Write down your target customer, the value they receive, your commercial objective and any minimum margin or contract constraints.
   5. Paste the spreadsheet summary and the completed prompt into ChatGPT, Claude or Gemini, then ask it to calculate the monthly and annual options without filling gaps with estimates.
   6. Compare the recommendation and every calculation against the spreadsheet, correct any unsupported competitor or market claim, and ask a colleague to challenge the assumptions.
   7. Choose a controlled price test with a defined customer segment, record purchases, cancellations, objections and sales cycle outcomes, then decide whether to publish or revise the price from that evidence.

   Prompt

   Act as a commercial pricing analyst. Help me choose a monthly and annual subscription price for [product or service] in the UK.
   
   Use only the information I provide. Do not invent market figures, competitor prices, customer willingness to pay or conversion rates. Separate facts, calculations, assumptions and judgements. If information is missing, say what is missing and show how it affects the recommendation.
   
   Here is the information:
   - Product and main customer segment: [describe]
   - Customer problem and value delivered: [describe]
   - Current price, if any: [price in GBP, and say whether VAT is included]
   - Proposed billing options: [monthly, annual, or both]
   - Direct cost per customer: [amount and what it includes]
   - Monthly fixed costs attributable to this product: [amount]
   - Payment, support and fulfilment costs: [amount or description]
   - Current customer, sales, renewal, cancellation or usage evidence: [paste data]
   - Customer segments with different needs: [describe]
   - Competitor prices and source links or dates: [paste verified evidence]
   - Commercial objective: [margin, growth, retention, cash flow or other]
   - Constraints: [minimum margin, contract terms, VAT treatment or other]
   
   Produce:
   1. A clear comparison of monthly-only, annual-only and monthly-plus-annual options where the supplied information supports them.
   2. The arithmetic for revenue, direct cost and contribution for each option, using my figures and stating the period used.
   3. A recommended price or price range in GBP, with the decision rule behind it.
   4. A suggested annual price and an explanation of its relationship to the monthly price, without assuming that an annual discount is automatically right.
   5. Sensitivity cases showing what would change the recommendation, without inventing probabilities or customer response rates.
   6. The strongest reasons the recommendation could be wrong.
   7. A practical price test using existing customers or prospects, including what to measure and what result would justify changing the price.
   8. A short list of questions I must answer before publishing the price.
   
   Do not present the recommendation as a forecast or guarantee. Do not treat competitor pricing as proof of willingness to pay. End with a concise decision memo that labels the remaining judgement as mine.

   Open it prefilled in ChatGPT or Claude, or copy it into Gemini, which takes no prefill link.

3. Hand it to a person

   The distant third

   A person who owns the outcome does this end to end, worth it when the failure is dear.