Nope. Actually, I don't think it's something to take money for
Sref codes (style reference codes) are shortcuts that apply specific artistic styles to your Midjourney images. They help you achieve consistent visual results by referencing pre-defined style combinations.
Sref codes simplify the prompt engineering process by packaging complex style parameters into a single code. They save time, ensure consistency, and help you achieve specific artistic looks without writing lengthy style descriptions.
— Test the code with simple prompts first
— Combine with --ar and --q parameters for best results
— Keep track of which codes work best for your style
— Use version 5.2 or newer for optimal results
Yep, go ahead. The formatting would be "--sref 13246 537688" (just divide them with a space)