I haven't personally purchased from them, but the reviews on eopinions.com are great (4.5 stars I think). I'd make sure that's what I wanted (maybe see if a
Walmart or Circuit City near you has one you can look at) and go over the return policy (ibuydigital's seems fair). But I wouldn't hestitate to buy a camera online, except maybe eBay, especially if it saved me money AND a trip to a store on Friday!
maybe you should try the website on Friday, and if you can't get what you want, order online.
Hope this helps