Color: Black. Available for individual sale, but shipping costs apply. I have about 50 sets of 3. Please refer to the photos for size measurements. Regarding pricing: For smaller quantities, an envelope should be sufficient. The price will depend on the envelope size. For bulk purchases, please comment with the number of sets of 3 you'd like, and I can adjust accordingly. I will also list spare suction cups separately. Thank you for your understanding. Shipping will be via a simple envelope, so the optimal price is 400 yen per piece. In the summer, suction cups may not adhere as well due to the heat, so please consider these for spares. I'm thinking of 1100 yen for 30 pieces (10 sets of 3).