Start with admission. The researched Krabi shared base excludes THB 400 adult admission for Emerald Pool and THB 200 for Hot Springs. For a family, that changes the ranking quickly.
Next inspect pickup. Klong Muang and Tub Kaek carry a researched THB 100 per-person supplement on the shared product, while a private base includes those zones but excludes admission, guide and lunch.
Finally separate seller, supplier and marketplace. A price shown in dollars on a marketplace is not a direct Kohtour THB rate. A transparent Live quote is more useful than a fabricated conversion pretending to be inventory.