I happen to know a little bit about the web and... Here's WHY YOU SHOULDN'T buy from this site... When you add something to your cart and click to checkout the login page where you enter your name, addy, phone, email, password, etc is not an httpS: url... This means the site doesn't have an SSL (Secure Sockets Layer) this allows secure communication of sensitive information across the internet. Now I didn't venture past this page, but I'm willing to bet that after they steal your name, address, etc that the page you put your CC# into will also not be Secure...
Secondly, since I work with Columbia through my own online retailer website I can tell you they require you use a Registered Trademark with ALL notations of the company name "Columbia". This site uses it nowhere, and knowing how picky Columbia is, they wouldn't let this go for more than a day or two... Not saying that's a make or break thing, but its definitely a red flag... I'm sure if you kept looking there's more red flags, but really how many do you need!? I'd steer clear.