If I didn't see the original packaging boxes, I would think there are refurbished or used machines. 

Ordered the Electrolux 6 Series set, washer + dryer. So far, already exchanged the dryer, and then waiting for the exchange of the washer unit. 
Once delivered and installed, we found the drum wasn't working in the dryer. So loud, it sounds like a broken engine, or a sword fight inside (metal hitting sound).
Then, an exchange unit (dryer) was delivered and installed. It works so far, but poorly assembled. I found a screw in the gap between the door seals. Occasionally, there's moisture and debris caught at the seals between the door and the dryer. If this keeps happening, I might even need to do an exchange, for the 2nd time.