It depends on what it does: a site people find is not priced like one that takes payments, bookings or runs your business. The Spanish guide has published market ranges; here is what moves the price.
What moves the price
Features: taking payments, bookings or a team panel move the price the most.
Custom design or template: templates are cheaper; custom design fits your business.
Content and languages: each language is extra copy and review.
Connections: payment gateway, email, calendar or the tools you already use.
Ask for a quote that won't surprise you
A fixed price for what gets delivered, split in stages.
What is in and out, and what extras cost.
One-time costs separated from monthly or yearly ones.
It depends on the type. The Guatemalan market ranges from templates for a few hundred quetzales to custom systems of tens of thousands. What matters is a fixed price before starting.
What makes a website cost more?
Features (bookings, payments, a panel), the amount of pages and copy, languages, and custom design versus a template.
Are there monthly costs?
Yes, small ones: the domain renews yearly, and hosting and maintenance are usually monthly or yearly.