Start with what is included
A price is useful only when it is attached to a clear scope. Two proposals with different assumptions can look comparable while describing very different work. Read the deliverables and exclusions before comparing the totals.
Start with the user journeys. Which screens, roles and actions are included? Does the quote cover only the public interface, or also the administration tools and content management behind it? Each part needs an owner and a definition of done.
Check the work behind the screens
Check integrations separately. An integration is more than a connection that works once. The proposal should address what happens when credentials expire, a provider is unavailable or incoming data is incomplete. Testing and failure handling belong in the scope.
Look for dependencies. Content, account access, data cleanup and approval decisions can affect the delivery schedule. A useful proposal makes these visible so that everyone understands what must happen before the next stage can begin.
Agree how changes and handover work
Ask how changes will be handled. New information is normal during a project, but it should lead to an explicit decision about scope, time or cost. Avoid an arrangement where additional work is assumed without discussion.
Read the handover and support terms. Clarify who controls the accounts, which materials are delivered and what launch support covers. Ongoing maintenance and new features may be separate services, with their own priorities and response expectations.
Know the ongoing costs
Finally, distinguish project fees from third-party charges. Domains, hosting, subscriptions and usage-based services can continue after delivery. A written quote should identify those categories and explain which costs are included, estimated or billed separately.