Price sends a message. "$20, sure, but not worth 5% of what your game sells for" tells me how much respect you have for the quality of your engine.

And now you want to replicate Unity's trick where they forced every no-budget crap-fest passing itself off as a game to show the Unity logo while actual game devs with a modest budget could hide the engine they used. And now Unity is associated with crap games.

Honestly, if you want my opinion I have no idea why you would want that, but here it is: get a few amazing games so your marketing is "these fantastic successes happened with our engine" and then sell it for a thousand dollars a seat.

Stick up a 90-day trial version that forbids distribution, then people can try before they buy, but you don't become known as that crap used by kids making terrible games. Then once you have a reputation, you can afford the free-for-free-games edition and be seen as the good guys.

I haven't looked. For all I know, your current pricing is reasonable. But you're sending a message that serious game devs would be better off with a "real" engine and cheap hobbyists could probably afford to spare a few bucks if they felt like it.

Seriously. Try it. Put a $1000 tag on your website, or at least an offline copy. Look at it, and see if your reaction is "that's a bullshit price" or if you would pay that much for what you're offering.