Re-stocking fees under a return via DSR are illegal. A company is not allowed to charge you a restocking fee under DSR.
I've seen a restocking fee listed in quite a few places.
Generally, what seems to be the case is that if you return the item, unopened and the item can be sold, as new to somebody else, no restocking fee is due.
However, if you open a product and break the seal of the packaging, the product can no longer be sold as new. This is where I have seen some retailers state that there is a restocking fee. This is effectively to cover their losses on the products resale value.
From my understanding the DSR allows a consumer to inspect the product and then return it for no penalty/charge. HOWEVER, IF the customer decides to use the product...then there is absolutely no way that DSR will obligate the retailer to refund the full amount.
For example, if I buy a bicycle and have it delivered. I make use of it. I put on 400 miles on it (ie. make heavy use of it). I then call up the retailer and say I want to return it, under DSR. There is no way that I would get away with that...they may charge me a restocking fee.
Someone please clarify this.