Every people who told that the prices are high i think it does not.
I have rewriten many templates and make themes allways by scratch within mybb defaul templates and i dislike the copy or entire rips. That is why people ask for cheap prices due general skins are between 25 to 100 due you have in mind to sell it more than once, at least to cover up the entire job. But exclusive designs are between 100 or more due it have to be unique, only one sell and even so you have to offer updates and support.
I know due i have made exclusive plugins, or skins and i allways offer cheap prices and on the end the job was refounded. But people said o cheap the i will ofer a dolar.
Many of us do not offer exclusive services and users are allways disturbing you even for free products. But when we try to get a donation. None is came from entire communitty. I have heared about many want to donate but they can't and the years pass off and the same.
That reason forces us to ask for a regreat if you want exclusive jobs and take our time, at least i take the money due is not tge things we do, but we know how to do.
I have seen people trying to make something and the months go off and they can't finish it. I have customers asking me about those questions and the time and price. I have done the jobs many times soo quick, other i take the time to fix it up all issues caused by the trying bad solutions from user or others who have tryed to fix for 10 dollars or 25 and they can't. I have fixed, customized and more many sites at low cost. But lot compared with hq jobs. So i know when people said it ia very expensive they have no idea on what they want and do not know all the backend proccess and more.
But about the subject. Your skin can be done and the price depends on what do you really want
Cheap prices ( rip themes and not offer support, many issues )
Good Prices ( high cost, but good quality, support, and not rip )
High prices ( people who really know what they do and can offer to you a better work compared within you have asked for )
So you may decide, this case i will not work if there is a copyrighted skin. But otherwise i offer allways a similar product but with own codes to not copy anything and make the work since defaulr skin, and many times in live project that way you can see the advances and ask for changes, customizations, etc.