? Most economical rear outlet toilet?

[average joe]

I'm making an apartment out of my garage and I'm not gonna break up the slab. Therfore I need something rear outlet. What would be the most economical rear oulet toilet for a somewhat confined space?

[Redwood]

There is no such animal! When you get away from the typical floor toilet the price goes up!

[bombjay]

There is no such animal! When you get away from the typical floor toilet the price goes up!

1) Plan on breaking the floor or
2)Plan on opening the wall and really going for it

Back flush toilets (I think you are considering ones that you see commercially)
Have that structure to support the toilet.
Tank models for these can be had.
Good luck!

[Redwood]

You can get a 1/2 decent used car for what that will cost!