Honestly so far for the the Dolce Gusto was doing a lot of effort in finding compatible capsules and at a good price.
Lately I have made a purchase on CAFFE.COM site that sells products compatible Tiziano Bonini
Are many different varieties of capsules: by normal coffee to flavored coffee, from instant drinks to herbal teas and tea.
On the site you can buy both the tasting kit that individual packages of 10 pieces. Greater the quantity of capsules that are purchased greater the savings.
Also I recommend you subscribe to the newsletter, every Friday are sent very interesting offers and discounts.
Also by registering on the site you have 5 € discount on your first order.