Replacement struts don't actually replace the part that is probably bent. They just drop inside the factory strut. You'll prolly need a new one anyway, unless you go coil-over. If you get a new strut tower, you may as well get 4 new shock cartriges, since the one on that side probably won't be any good anymore, and aftermarket ones very well could be cheaper than OEM. I think my KYBs were 150 or 250.
Is that all that got messed up? How about your wheel or control arms? Sounds like you might have gotten lucky if it's just the strut. Good luck.
If it breaks, you must upgrade!