Non verbal reasoning questions

Seeking an experienced creator of non-verbal reasoning items akin to English grammar school entrance exams. Tasks include designing clear, original puzzles (e.g., pattern matrices, series, odd-one-out, rotations, nets and cubes, codes, 3d shapes) with solutions and concise explanations. Multiple and ongoing projects available for a reliable candidate demonstrating precision, pedagogical suitability and attention to level-appropriate difficulty. Please provide per-question pricing and representative sample items for evaluation.