Outdoor advertising in Lagos is one of the most opaque pricing markets in Nigerian marketing. Rate cards exist; they are rarely shared. Discounts exist; they are negotiated case by case. Permits exist; they are sometimes optional in practice and never optional on paper.
What you actually pay for
A 48-sheet on Third Mainland Bridge will list between ₦1.5 million and ₦2.5 million a month on a partner rate card. That price covers the face itself - not LASAA permit, print, mounting, removal or replacement after a Lagos rainy season.