Akkis2, I know corsets and things are really expensive, but I'll tell you one thing...don't expect a cheap one to be comfortable. I've tried a LOT of corsets, and anything below $100 is really...umm, unfortunate to wear. Granted, I have a little bit of an extreme figure when it comes to corsetry (my hips are very high, and my waist is pretty small, considering) so cheaper made corsets either barely hang on to me, or they dig in at the back like crazy...I end up with big red marks and feeling like I'm gonna pay for it for some time. I really wish I could afford one with proper steel bones, but right now it's not gonna happen.
That aside, however, you may want to check out your lingerie stores, because that's where most of mine have come from. They're pretty close when it comes to mimicking a good corset.
Also, if you're planning on removing it part way through, and you'd like it to be even a little bit sexy, I'd personally reccommend getting one with a zipper front, or getting a zipper put in. I did that, and because of the nature of the zipper (since the corset is "under pressure" you need something heavy duty) I matched it with the embroidery, so it didn't look so bad. Worked great, too! The hooks and eyes in most corsets are really frustrating and difficult to take off, so check in to see what you can deal with, and how you can make it work for you.