We have converted us from the original Angelcare on this Smell free refill cartridges and did not regret it. They are much more resistant to tearing, odor-tight and consumed not as fast as the Angelcare cassettes. A strong buy recommendation from me !!! As for the price, I paid previously for 6 x Angel Care 39,80 Euro, free shipping, but not here on Amazon. This one cost 38,95 Euro plus shipping at my provider and I get a tape anymore, so access. They last longer in any case, it should be kept in mind!