VendorClue research · software cost principles
Compare plan limits before comparing prices
Contacts, seats, usage and required capabilities define whether two software offers are comparable.
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At a glance
The short answer
Two software plans with different limits are not interchangeable simply because both advertise a monthly price. Start with the work your team needs to do. For email software, write down the audience size, monthly sending volume, number of people using the account and capabilities the workflow requires. Use that same scenario for every offer.
Read what the supplier counts. A contact might mean a stored record, an active subscriber or another category defined by the vendor. A sending allowance might reset monthly, apply to a billing period or exclude particular message types. If the definitions do not match, record the difference before comparing the amounts. The task is to model the offer's rules, not force the same word to mean the same thing everywhere.
Separate a plan limit from an available add-on. A plan that blocks sending above its allowance behaves differently from one that permits additional sends in paid blocks. For a team with variable usage, estimate the relevant workload and inspect the block size, price and payment timing. An overage option that is undocumented needs confirmation rather than a guessed surcharge.
Check seats as well as usage. Included users, additional users and permission levels can determine whether a team can actually work in the plan. A low starting price that covers one operator is not a complete quote for a larger team. Verify whether extra seats are sold individually, in bundles or only through a higher plan, and whether their billing schedule follows the main subscription.
A required capability deserves its own eligibility check. Included, available as a priced add-on, quote-only, unavailable and unknown are different states. For example, a team that needs a custom integration should not treat an unspecified integration claim as a verified match. Ask for the documentation that explains the actual capability and its constraints.
Avoid comparing raw net and gross prices as though they share a basis. Keep the tax label and currency visible. A mixed tax basis requires an explicit comparison policy and enough information to apply it. Similarly, exchanging currencies introduces a dated conversion assumption; it should not happen invisibly inside a result.
After the offers satisfy the same scenario, compare their complete supported charges over a defined horizon. Keep quote-only and incomplete offers available for further investigation, with the missing information stated clearly. This gives the buyer a practical shortlist and a list of questions, without promising a cheapest plan that has not been established.