You need a salon marketplace when your main problem is discovery. If clients do not know you exist yet, a marketplace can put your profile in front of people already searching for beauty services.
You may not need a marketplace if most clients come from referrals, Instagram, Google Business Profile, WhatsApp, walk-ins, or repeat bookings. In that case, a direct booking link may be more important than paying for marketplace-sourced clients.
The best way to decide is to measure. Track how many clients each channel sends, how much they spend, and whether they rebook. A marketplace is valuable when it brings profitable repeat clients, not just one-off discounted appointments.
Read marketplace vs direct booking for salons for the full comparison.