Hi. Your models look good. Price seems reasonable for the quality, but the lack of sales has little to do with quality or pricing at this point. You just uploaded the models a week ago. Competition is steep, and your models aren't something that people are searching for often. This, combined with the fact that sales seem to be down across the board for everyone this year, don't expect sales to happen quickly on any single item. If something like this sells two or three units in a year, you will be fortunate.
Instead, do your research into what people are looking for and make as much high quality content as you can in a reasonable time frame. Don't expect or wait for anything to sell. Just keep adding content to your profile and store. Sales will come eventually, but it's really a numbers game in a saturated industry. Good luck! You seem to do good work.