美国加尼福尼亚州洛杉矶采购需求：背包、腰包、袜子、运动服饰、登山杖、运动器材

I'm reaching out to inquire about the wholesale pricing structure for your products. Specifically, I'd like to understand the different pricing tiers based on volume purchases. Are there any discounts available for bulk orders or specific pricing gradients that apply? Additionally, please provide details on shipping costs to the U.S., as well as any lead times I should be aware of for processing and delivery. This info will be really helpful for us to make informed purchasing decisions moving forward. Thanks for your assistance!