美国采购需求：磁性玩具、磁珠玩具、磁性桌面玩具、磁性益智玩具、磁棒玩具、磁性玩具

I'm reaching out to get more details about your product. Specifically, I'd like to know the minimum order quantity. I'm interested in a total of 512 pieces, packed in blister boxes, with an option to order 100 of them in different colors. Could you please provide information on the pricing and the minimum order requirement? Additionally, I would appreciate it if you could include the shipping cost to the USA. Would it be possible to get a sample first? This would allow us to evaluate the product before placing a larger order. Looking forward to your response!