Brand portals (Antares / CWD / Bates / Horseware / Ariat), how do you handle authorised-dealer agreements?

Top-tier tack and apparel brands restrict who can sell + what MAP applies + which regions are allowed:

• Antares Sellier (custom French saddles), tightly controlled dealer territory, MAP-enforced.
• CWD Sellier, similar dealer territory restrictions, brand-specific fit logic.
• Bates (Australian), broader dealer network, MAP-enforced.
• Pessoa, Stubben, County, mid-tier saddle brands with dealer agreements.
• Horseware Ireland (Rambo, Amigo, Rhino blankets), MAP-enforced + e-comm minimums.
• Ariat (boots + apparel), e-comm friendly but MAP-enforced.
• Charles Owen (helmets) + One K, certification-restricted (SE-Eq, ASTM/SEI, VG1, EN1384).
• Roeckl (gloves), Samshield (helmets + show jackets), show-circuit-specific.

The Magento pattern: per-brand microsite (own header / hero / category tree) under /brands/antares or a separate store view; MAP-enforced pricing rules (no price shown until cart); brand-restricted shipping zones (Antares cannot ship outside the US even if a customer in the UK adds it to cart). Lets you legitimately carry top-tier brands without violating dealer territory clauses.