A digital marketplace needs a sustainable way to cover its costs while staying affordable for local plumbers and customers.
KasiLink SA combines a small booking fee with optional paid features for plumbers.
A small service fee is added per confirmed booking made through the platform, similar to how the KasiLink SA booking API calculates cost per booking.
Plumbers can pay to have their profile appear higher in search results and on the home page, increasing their visibility to customers.
An optional paid verification badge for plumbers who submit proof of qualifications, building extra trust with customers.
Every booking carries a R50 platform booking fee, calculated the same way as the live KasiLink SA booking API.
A R50 booking fee is added to every confirmed booking, covering hosting, payment processing and support.
15% VAT is charged on the R50 booking fee only (R7.50), so the customer pays R57.50 for the fee. VAT is added to the quotation total.
The calculator below shows how the booking fee income scales as booking volume grows.
Pick a service and number of bookings to see the projected revenue, cost and profit. This uses the same figures as the KasiLink SA API (services/prices from za.co.kasilink.KasiLink, R50 booking fee per booking). A loss is shown as a negative number. Fixed costs are R3,500 a month and each booking costs R8 to process.
Charts built from the group's Mathematics Appendix. Figures 1 and 3 come from the group's survey and price check; Figure 2 is a projection, not measured data. Full sources are on the Sources & References page.
Mean 10.0%, mode 10%, standard deviation 2.7 percentage points.
Mean 85.8, median 85.0, average growth 53.8% a month.
Mean R500, median R480, range R250.
Green = monthly profit, blue = cumulative profit. Break-even is 84 bookings a month; the first profitable month is month 4.
KasiLink SA Assistant
KasiLink SA assistant — answers are grounded in our real service, price and plumber data.