imo, its better just to save and get exactly
what you want. if you want
a set of wheels that are relatively cheap, then all the more power to you.
but if you want a set of rims that are expensive...save save save. you'll be happier in the end. with wheels being such a status quoe these days (unless you have some serious exterior mods--wheels will be the things people notice most), it's important to get what you like.
if you're not sure of exactly what you want--browse around! there are plenty of wheel sites you can visit and any car magazine will have pages upon pages of adds (also, many mags annually publish a "wheel buyer's guide" which helps a ton)
a few sites you may want to visit for good browsing: superbuytire.com racerwheel.com: wheel makes/models tirerack.com: wheels for celica
(at tirerack, you will actually have an image of the celica posted..(75 different wheels are currently available at this site)so you can see what they look like on your celica)