Video doorbells: a tower job and a villa job are different trades
In a villa, a video doorbell is mostly a power-and-signal problem. The natural position is the gate or the boundary wall, which is often the worst wifi spot on the property and may have no power nearby. A battery model avoids the wiring but adds a recurring chore of recharging every few weeks in summer heat that also shortens battery life. A wired unit is the better long-term answer, but if there is no existing bell wiring to the gate, cabling and a wifi extender push a simple AED 250–400 job toward AED 500–800.
Price accordingly: a straightforward tower doorbell or peephole install is light work and should sit near the bottom of the market range, while a villa install with cabling belongs in the middle. If a vendor quotes villa-complexity money for a tower job, that is a quote worth challenging — comparing two or three vendor ranges side by side in the tamam app makes this kind of mispricing obvious quickly.