I just found this thread and I can say I am very disappointed. I arrived at this forum quite recently and loved how well-received I was, however, now I see some comments here that make me feel extremely annoyed.
Firstly, I apologize to the creator of the thread and ask that you don't lump everyone together in the same bag. Some of us do understand your struggles and respect you as an artist and human being.
I think it is extremely rude to insult the hard work of someone, no matter how good or how bad it is. [in big letters since I am extremely mad]
You can have your own taste and express your own opinions, we are free to do so but understanding where the thin line of where your opinion turns into disrespect is essential. Speaking with some restraint is what should be done, in case you have something negative to say.
None of us know the creator of this thread (or most of us) so we are not familiar enough to speak so freely to a stranger. Besides, we don't even start to guess how many struggles that person has in their life, whether it is related to art or not. You don't know someone's story so don't step on the boundaries that disrespect and hurt them.
Have some respect and decency, understand that we are all different people and should be treated accordingly.
I'm sure no one here would like to have their work, filled with sweat, tears, and time to be so rudely insulted just because it wasn't "someone's cup of tea".
Now, moving to a lighter topic after my rant.
I found a moment of nostalgia when I saw your art. My mother used to buy me several history books with art quite similar to yours, even though I was quite young at the time (around 9 years old).
I agree with what some people are saying: 250$ is a very high price. Even then, you, as the artist, should be the one to define it. Taking into account the number of hours and resources you need to create your art is essential when establishing your prices, so don't sell yourself short, however, I would advise you to divide your prices.
So for example, the picture with the fairy looks extremely detailed, so I'm sure it took several hours, if not days to be completed, knowing that you can easily charge that amount. On the other hand, you have some designs with simpler backgrounds and, maybe, in those you could be slightly more flexible since you end up working on them faster.
I would also advise you that, if you are only earning money as an artist, to build your community first. As I said, there is no need to sell yourself short but you should also have prices that don't scare people away. This way you will be able to have faithful customers that will end up coming back to pay for your services and then, slowly but surely, you can step up on your rates to the price you think they deserve.
Note: These are suggestions, nothing more, nothing less. Don't want you to feel like I am offending you in any way.
I also agree with what some members are saying. Your art is very unique and very dark, however, the Scribble Hub community mostly rotates around anime/manga lovers [for what I could see], just like Wattpad community is mostly teenagers that don't usually enjoy these types of designs/animations. Thus, it will be harder for someone who mostly enjoys anime-style art, in an anime-based community, to appreciate your art.
I would advise you to do a market search as I am sure there will be a community that will find beauty in your art [because, as I said, I've read books with art quite similar to yours when I was younger] since I think you are searching for commissions in the wrong market segment.
Nevertheless, I'm sorry for my lengthy post. I am sorry if your feelings got hurt by some insensitive comments [or if I offended you with my suggestions in any way!].
Hope you continue working on your art and achieve everything you wish