Normally, one discount code is only applied for one offer. However, If the users put a vast of items in their cart, it is easy to use one coupon code to purchase items. It depends on dereklam's policy, you can contact dereklam via mail for your reference.

It depends! Normally, the percentage that you can save with that dereklam Coupon will be shown right on the page, so you can see if it is applied sitewide or not. However, once you are not sure, try it right on their's products you want to buy.

Yes, it has ever. It may not be available now, but it is completely possible for loyal customers of dereklam to get it by tracking all of its promotion programs.

All deals from Promotion Programs of dereklam are collected here. For each certain occasion, its coupons will be on the top of the coupon list, and surely they always come with an expiry date.