...please not at the expense of "normal purchases". But as long as I have the choice to exchange or not, I think that's a good thing.
For us as a "large family", however, I would find analog offers from the specialist stores almost more appealing. So, instead of a trip to Alpamare, which means a net travel time of about 5 hours for us, why not a similar offer for leisure articles at SportXX? I could get a voucher for CHF 50 on the latest rollerblades for CHF 5... Such offers would serve us and the children best, as these are items that are always on the replacement list for 5 children and are not easy to find here in exchanges and similar places and quickly hit the wallet hard...