Some people who use construct 3 how much earn in a month as a low price
Here are some examples from people i know that make money with construct:
Subject A: He develops mobile games and publishes under his own indiegame developer name on different platforms, like steam, google play store, apple store etc.. return from google play at a ratio of 20 games with an average 3.5 stars per game (barely surviving) he doing around 4$ a day from ADS there, as sales go on other platforms he probably made around 2000 sales at a average 5$ not counting over 50% of them are "discounted offers" for marketing purposes not counting the fee apple takes and steam of 30% so ... is hard to make money as Subject A ( also Subject A has a daily job that pays more than his games).
Subject B: Sells his time to "code games" using Construct, he using platforms like upwork, freelance, fivveer etc however in a year he manages to make maybe 3000-5000$ the competition is high, and while Construct might be easy to use as a developer, people always go with "native coding" or Unity/UnrealEngine just for the sake of scaling possibility in future.
Subject C: Hobbists (like me and others around here), we waste most of our time learning, "playing" with construct, we like doing things from scratch, like a kids playing with "playdooh" or a carpenter that doesn't sell his sculptures, or work. Some of the hobbists, might take a Construct project once in a while for a low fee to make some "pocket change", or asks for donations for their contribution online on various forums or by sharing some coding examples etc. In this area are found lots of people, but none really making a huge difference.
Subject D: Doesn't get paid by using Construct as a job oportunity, but he gets paid by Using Construct to make a product to sell ("one hit wonders" game developers), and here are multiple examples, Guinea Pig Parkour is to be released soon, and at the look of how the development went, and quality assured it might make some money, however it can also be a gem that never gets properly published, and might reach its potential after years of being published, however are many other examples of "products" that made it so far, however none surpassed the 100,000$ i think.. i might be wrong, but i think all where under 100k as far as steam sales go. (Subject D: Works years to make his games and polish it, in some cases over 5-10 years, and in all that time no money gained.)
Short answer, you can make daily from -10$ to +10,000$ depends how you value and use your time.