can anyone help me with ‘pricing’ for some software i designed

i developed a full stack application for a company that i work for. LAMP stack. It's a custom built internal software application with bootstrap framework ui. The main role for this software is for employees to log phone call data and to log error that would otherwise be done with pen and paper -leading to a room full of stacked paper. It's a very custom ticketing system dashboard with user (employee) logins. it's also searchable.

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just out of curiosity how much on average would it cost to pay someone to build something like this?

I will probably just remove the branding and open source but i am curious.

any help would be great