Define the job first
Write down the platform, exact service, target quantity and deadline. Compare matching services rather than homepage starting prices. Keep an explicit distinction between advertising, managed marketing and purchased engagement.
Calculate the actual order cost
Record the quoted rate and billing unit. If a rate is per 1,000 units, multiply it by your quantity and divide by 1,000. Add payment charges, currency conversion and any minimum deposit that would leave unused credit. Do not assume unused balance is refundable.
Save the terms before paying
Keep the service ID, description, refill window, cancellation rules and support contact alongside the date. Ask how partial completion is handled and whether the provider can substitute another service.
Separate promises from measurements
An estimated start time is not proof of delivery. A completed status is not a retention measurement. If you conduct a test, document the starting count, timestamps and later observations, including any uncertainty from organic activity.
Make a decision you can explain
Compare cost, documented terms, support answers and measured outcomes separately. Do not turn missing evidence into a positive score. If the provider cannot answer a key question, reduce your exposure or do not proceed.