Scope
Does the quote detail precisely what's included (and excluded)?
Ownership
Do the code and content belong to you upon delivery?
Hosting
Will you fully control the domain, hosting and access?
Reversibility
Could you switch providers without rebuilding everything?
Recurring
Are recurring costs (maintenance, licenses, subscriptions) clear?
Right-sizing
Is the proposed technology justified by your real need?
Line items
Are there vague items ("misc. development", open day rate)?
Timeline
Does the quote set deadlines and delivery milestones?
Proof
Does the provider show references and a named contact?