Re-cost three popular products using current supplier and delivery quotes, then test whether your margin and cash buffer still work.
THE SOURCED NEWS
What the September figures measure
The consumer-price release reports a 0.4% monthly CPI rise in September as well as the 3.5% annual rate. Transport, especially motor fuels, made the largest upward contribution to the change in annual CPI inflation. These are UK household-price measures, not a measure of your business’s particular bills.
The separate producer release measures prices paid and charged by UK manufacturers. Annual input inflation was 8.3%, compared with a revised 6.7% for August; annual factory-gate inflation was 4.6%, compared with a revised 3.8%. Both releases were published on 21 October 2026.
SELLERBUNDLE PRACTICAL ANALYSIS
SellerBundle: give three products a fresh cost check
Pick a bestseller, a low-margin item and a product you plan to promote. List the current cost of the item, packaging, delivery, selling fees and any paid production work. Use dated invoices or quotes and keep your treatment of VAT consistent.
Compare the amount left from each sale with your previous calculation. If one cost has changed, work out its effect on the whole order before changing the selling price. A national inflation percentage cannot tell you which of your products still earns enough.
SELLERBUNDLE PRACTICAL ANALYSIS
Try a cautious sales week as well
Put your confirmed stock purchases and bills into the cash-flow planner. Test a quieter week alongside the sales you expect, especially before committing to a larger seasonal order.
If you change a price or offer, record the date and compare completed orders and the money left after costs. Avoid changing several things at once if you want to understand the result. Keep possible supplier increases separate from charges that have actually been confirmed.
GO TO THE ORIGINAL
Check the sources.
ONS: September 2026 consumer-price inflation, published 21 October ↗
Published 21 Oct 2026
ONS: September producer prices and July–September services; includes revised comparisons ↗
Published 21 Oct 2026
This is an original SellerBundle explanation with practical editorial suggestions. Check current official terms and suitability before changing your business processes.