When does bespoke custom development make sense?

Above $15M GMV with strong in-house creative direction, a brand that has developed its own visual vocabulary, and a budget that can absorb six-figure implementation plus 60 days of creative director attention. Below that scale, off-the-shelf white-label tiers usually deliver 80% of the value at 5% of the cost; the marginal lift from bespoke isn't worth the cost or the lock-in. The cosmetics case study on this site walks through the math for a $18M GMV brand where bespoke paid back; below that scale, the math rarely works.