Complex sentence: Custom-made cosmeses are generally more expensive (costing thousands of US dollars, depending on the level of detail), while standard cosmeses come ready-made in various sizes, though they are often not as realistic as their custom-made counterparts.
Split into simpler sentences: Custom-made cosmeses are generally more expensive, costing thousands of US dollars depending on the level of detail. Standard cosmeses come ready-made in various sizes, though they are often not as realistic as their custom-made counterparts.