In reply to your sales in person compared to the website sales I think you're missing the boat for many reasons.
Think about it this way. When you 1st meet someone in person you're telling them about your service, what you offer and why they should buy from you.
The home page is screaming at visitors with that red paragraph at the top. Also, the text is different fonts, sizes and kinda all mixed up with no common set of fonts. Very distracting.
As for the 4000 visitors, where are you getting them from? Are they coming to your site via related sites, search results?
The photo of the shirt is just not doing it for me. You really need to have 6 items or so on the home page. If you want your site to sell you have to show them things within 15 sec's or less. I'm thinking your bounce rate is very high.
Then the 2nd paragraph is almost begging them to come join the fun. It's just not professional wording and actually from the home page I can't tell what LOFT means till I go to the about us page. In all honesty I'm thinking your target buyer is small percentage as not everyone get's it. Lack Of F...g Talent is tough sale online. Funny in person and more of a impulse buy to me.
I think the idea is good but really has to be presented and packaged on the web to sell. At this point, I'd take the godaddy approach. Hate to say it but sex sells. So, with a few modifications, photos of some hot girls, tank top with carts and maybe I'd do a video of the owners about 20 sec's to make the pitch like you would in person.
The cart girl page.. font at top under photo is really hard to read. Also, do you not have more photos

hmm, just noticed the gallery is empty .. I take it this is new? Really need to have more go create them

Back to the home page for a moment, the bottom of the page is just promoting the logo, so much wasted space on the home page in general. You're just loosing their attention.
Take a look at some other sites that sell same types of products, gear etc.. I think if you really want your site to sell you're going to have to redo much of the site. It's not a bad idea, just need to rethink it a little and check those stat's, if the bounce rate is high.. you're loosing them. So, don't promote what's not working.
Hope this helps..