Yes figure 8 mics are expensive
And yes u89's are really expensive. But if I was to help somebody just getting into recording, here's a M/S set of mics that are cheap and work great together, and I would totally recommend.
The CAD M179 with a CAD CM217. Check out the reviews on these budget mics and you could do M/S with these and use them also on many other sources.
CAD M179 (B&H has these for $130) this may be one of the best bang for the buck deals out there!
CAD CM217 (these sell for around $50)