Sci-Fi Book Cover Artist Wanted, Multiple Covers Per Month (Show Me Your Work)

I publish sci-fi books and I need a cover artist for ongoing work. If the style is right, this is multiple covers per month, every month, long term. I am looking for one specific art style. I have attached four covers as examples... (Budget: $250 - $750 USD, Jobs: AI Art Creation, Concept Art, Digital Art, Digital Painting, Graphic Design, Illustration, Illustrator, Photoshop)