I really like mine! Allow some time to read/view some online tutorials & to "play" with it a bit to get the hang before you start making books/etc with your "good" supplies.
I think the best thing for you to consider is how much you might use it. Many stores that offer printing/binding can do different types of bindings for you if you only expect to do a few books/projects. I have used Staples & a local place & neither were very expensive.
If you do decide on a BIA, I would suggest shopping around. See if there is a LSS by you that carries it & accepts some type of coupons (either ones they send out or Michaels/Joanns/etc). I know Archivers carries it & they often send out 30% off one item coupons in their fliers (you have to sign up for their mailing list, I think).