These guys at one time sold only through eBay. Shipped Fast and always top quality. Recently they left eBay (leaving there usual customers a in depth "reason why" email, very funny stuff). They opened there own. Com about 2 months ago and since I have purchased 2 shirts.
As usual the items are very nice, but now there getting into custom packaging and even sent out a free promo shirt on there my last order. Downside is there is usually a 5 business handling PLUS shipping times. Took around 2 weeks for me to get my item. Not a huge issues as Threadless delivers in about 5 days and woot. Shirt is around 2.5 weeks so I guess its in the middle.
Over all I'm very pleased with there service and compared to the big guys they hold up, and the quality of the products are very high and there customer service is top notch.