Break the claim into measurable parts
Cheap describes a cost comparison, while fast describes timing. Ask what rate unit and quantity the price uses, then distinguish submission, start time and completion time. A system that accepts an order immediately may still take time to deliver. Do not combine these separate facts into an unqualified fastest service claim.
Normalize the total purchase cost
Compare identical quantities and currencies, including any minimum funding requirement or disclosed charge that affects your actual purchase. A low rate per thousand may be irrelevant if your intended quantity is below the service minimum. Record the usable balance and order cost rather than judging solely by a headline starting rate.
Choose which timing matters
A live event may need a narrow start window, while an evergreen post may tolerate slower delivery. Write down the real deadline and ask whether the stated estimate addresses it. If the provider offers no exact commitment, do not plan a critical launch around an assumed start time. A faster label alone cannot resolve that uncertainty.
Include support in the comparison
Check cancellation, partial-delivery and replacement terms alongside price and timing. A cheaper service can create more administrative work if its scope does not fit the order. For resellers, include that work in the margin. Choose the offer whose documented conditions fit the task, rather than treating a combined marketing superlative as evidence of superior value.
Can the cheapest rate also be the best value?
Possibly, but only when the target, quantity, timing and support conditions fit your order; the rate alone cannot establish that.