I've used the service now for several years. It has saved me a considerable amount of money and has never missed an auction. For me, buying is utilitarian and I don't want to have some dumb "bidding war" with someone else that finds it fun to spend more money. Gixen takes this annoyance out of the picture and does a good job. Considering the mirror service is a small fraction of what you'll probably save, its a good idea to support the site if nothing else. User interface is easy to use / simple. Grouping feature is very nice as it allows you to setup a type of item you want to win and manage them automatically. Even the free version is relatively non-intrusive with advertisements, mostly just "please donate to support us." Thanks for the great service!