With a budget that small you have quite a challenge ahead of you.
Before we start making some suggestions, why don't you provide a little more information. What is the size of your Indoor room? What kind of sound are you looking for indoors? Subwoofer? 2 channel, 3 channel, 5 channel? What is the size of your outdoor area? Did you want to cover the entire outdoor area or maybe just a bench, table, or pool area? Will the indoor be used for Movies or Music? What are your expectations? Did you want new or used equipment? Are you willing to make some new feature sacrifices and buy equipment that may be a little older?
There are just too many questions to get you started off that one post.