Normally paper cushions are valid for 3 years in regular storage space We therefore recommend that you budget for a maximum of 3 years of sales to prevent wastage due to packaging upgrades and changes We have previously described the shipping costs for different toolbox timeframes and recommend a minimum order quantity of 3000 PCS in order to obtain the most cost effective shipping costs, based on the previous customers we usually produce 10,000 PCS for first-time customers to optimize production costs and shipping prices.