Products in the promotion category are open to everyone, whether they are registered or not, with just one exception: the VIP-'exclusive', which requires you to be a very loyal customers who ordered more than 25 times.
The special week promotions that are announced in the weekly newsletter are valid for two weeks until the end of the indicated time period or sooner when sold out.
Products that are bought in a sale can NOT be returned, just like books and probiotics.