Milestone-based delivery with a clear scope and price attached to each phase, so you know what you're getting and when. Design decisions get benchmarked against products like Stripe, Linear, and Notion rather than default Sharetribe styling. And because I've worked across Sharetribe's plan tiers, I can tell you upfront whether your feature list needs Extend (live custom code, full API access) or whether Pro or Lite genuinely covers it, so you're not overpaying for infrastructure you don't need yet.