Yes, you'll have to pay for premium plus and platinum in the future. I believe their $99 and $149 respectively. I got all three :).
Kodansha International is a publication house that publishes many good books on japanese grammar. They have a Kanji Learner's Dictionary, which is for kanji, primitives and such, and a Furigana Dictionary, which is more of a huge alphabetized vocabulary list, with the kanji and example sentences (the furigana let you read the complex kanji in the example sentences).
Kodansha has done other books such as guides on usage of particles, adjective, adverbs, verbs, and then specialized vocabulary boosters and more.
However, Kodansha may soon be no longer offering their books internationally (ie. outside of Japan), so I would hurry. I have to order some books from them too.
If you have an iPhone/iPod Touch/iPad, you could try the app "Kotoba!", it's free and is a japanese-english dictionary with kanji support and pitch pronunciation. It's an app worth at least $10, but since it's free, it can't hurt to try it.
If you're at home or have access to internet on your phone, you could try www.japandict.com . It's a really comprehensive online dictionary, with detailed explanations of the kanji and their primitive elements, as well as virtually all vocabulary. Think Wikipedia, but for an online dictionary. It's also got plenty slang, and it warns you if said slang is offensive. I used it quite a few times when I was reading manga or literature before I had my dictionary :)
Best of luck with your studies ;) Tanoshinde kudasai! Ii setsumei deshita ka?