You can just give them a day rate, shoot, hand over the rights and walk... but that's a bad idea.
Catalog shoots are complex. Like Doug says; will they want to reuse the images? (almost certainly they will); what is the print run and geographic distribution for the catalog? Do they intend to publish the catalog on the net as well? Those factors determine the copyright license fees which are your bread and butter.
Where will you do the shoot? Do you have to rent any space or equipment? How about models? model releases and property releases, can you get them? Beware if they tell you they have a studio space, I bought that one once and wound up shooting in an empty 10'x14' office with carpet floor and 8' tile ceilings... on a single 15A power circuit.
You need to anticipate your expenses, figure them in, mark them up. Don't forget post-production time, MUA/stylist time, assistants, etc. That stuff really adds up.
To get an idea of what people are charging for copyright licensing, get Fotoquote
. Not the greatest piece of programming on the planet but worth the price.
Don't bid low or you'll regret it; you won't ever be able to ask a higher price from that client or anyone they talk to.