The standard rate for game development is $52 USD per Hour.
I only work with Unreal Engine. It uses C++ Programming, and I can Publish for Mobile "Android & IOS."
I am good with designing I just need a basic idea of what you need the Game to do.
It's easier and cheaper to use Unreal Engine, it's quick and easy.
Otherwise, Script Programming is CodeBlocks, and it would take longer and be more expensive.
Depending on what you want the game to do, if it's basic, it will be around 1-2 months completion time depending on the size of the game which would be the estimated cost of $13,000, but this gives you full rights to sell the game through a retail platform such as "Google Play or IOS App Store". So you could possibly make over $1,000,000 on the Game.
With Unreal Engine, they take a 5% royalty fee after the first $1,000,000 earned. You would own the copyright on the Game/Application; you can use it privately or sell it. I would suggest selling it as an investment.
I only have the equipment to test and publish for Android
You need different equipment for IOS development.