in order ...
1. No clue. Check local woodworking stores like Woodcraft and sometimes in the back pages of Fine Woodworking and other woodworking magazines.
2. Not usually. I've never seen any package deal on major woodworking machines, but there are individual sales on many, one at a time. Grizzly runs sales and Laguna and Jet.
3. No such animal as far as I know. For really tough interior cuts a Bosch sabre/jig saw is the best tool I know. You can get narrow blades that will turn a tight radius. You will be limited as to the thickness you can cut.
A bandsaw can be used on the interior of a cut IF you make a cut to get inside, then glue it back together, which can be done pretty seamlessly.
The answer to your question will only be as detailed and specific as the question is detailed and specific. Good questions also include a sketch or a photo that illustrates your issue. (:< D)