More than just worthwhile

If you have the part in your hands, then you think yourself, which of these horrendously high price is justified (given the minimalist material use) .... almost 10, - including postage for probably 2 - 3 g rubber / plastic .. .. the anger is justified but not later than the enjoyment of perfect milk froth. The foam is as it should be, creamy and firm, tasty. Ultimately, a worthwhile investment, but due to the significantly high price only 4 out of 5 stars.