Open-ended hourly billing leaves the client doing arithmetic they can't verify. Even honest numbers feel risky when the final total is unknown.
A fixed scope turns that uncertainty into a decision. Here is what's included, here is the price, here is the timeline. Everyone can see where the edges are, which makes it easier to say yes.
Clarity over cleverness
The strongest packages are simple enough to explain in a sentence and specific enough that nobody argues later about what was promised.
Discounts can win a first project. Clarity wins the second one.