I really liked society6 when I bought clothes from there. Good prices and high quality prints and clothing, I still have the short and two hoodies I bought from there three years ago!

I made one using Customink. (pic: http://prntscr.com/jcuq46) Twas pretty easy, the have a lotta options. Some options are limited with a minimum of ten T-shirts I think, but it's an overall awesome service. Customer questions and support was also really helpful, they suggested I change the shirt colour (it was originally very dark purple) because they felt the design would be lost. It hasn't been through a TON of pressure, but I'm confident it will last.

WeLoveFine has awesome quality shirts. I got my httyd shirt from it a while ago and still own it. So I can vouch for WLF, their prints do not come off (though I only use low heat with my shirts because heat expedites the breakdown of them).

I have a mug from Society6 that has lasted (obviously not the same situation, but it's pretty quality.) So I'm guessing their products are good.

Can I ask for more specific time frame than "a while ago"? like Months? Years?

A mug is indeed different than a shirt, so mugs won't work well for comparison on this.

Years. Probably over three.

yes there is

I have a local shirt print shot. I actually wanted to give it a try soon, for an upcoming thing I am going to.