we are a small business in Kocaeli providing technical service and periodic maintenance for industrial machinery. we want to build a small-scale web app where our customers can submit service requests and view technician locations on a map. we’ve already partnered with an acquaintance who will handle the development but the screen designs and interface work are still up in the air.
when I spoke with a digital agency they quoted us 28,000 TL for the UI and user experience design. since our budget is tight that figure felt steep. i've thought about learning modern UI design software online to mock up the screens myself; watching the tutorils arranging basic boxes seems easy enough at first glance. in your opinion, does it make sense for a business owner to spend time learning this software, or is paying the agency pretty much unavoidable?