Discount codes don't stack. If you have 56% off discount, they can't also use a "free shipping" coupon since Only one discount at a time can apply to a single order at the puzzleup site.

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 puzzleup's policy, you can contact puzzleup via mail for your reference.

There is no certain number for the frequency of releasing coupons from puzzleup. But, most of the time, there will be at least one available. Special Discount Days such as Black Friday, Cyber Monday, Back to School Sale... come with many coupons.

Yes. Coupons for each Discount Event of puzzleup will be collected here while being updated day by day. Sometimes, there will be deals not updated promptly but it's rare, we expect sympathy from you. 

All deals from Promotion Programs of puzzleup 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.

It is hard to see a Sitewide Discount of 50% from puzzleup on normal days. It's easier for you to shop on federal holidays or important days of the year. New Year’s Day, Thanksgiving, Christmas, Military Day...are recommended.