"The Kenny Rogers t-shirt is a replica of an old ’70s tour t-shirt that was sold in Wal-Mart and other stores. Vince Gilligan bought the t-shirts at a Wal-Mart outside Taos thinking that it might be a good कमीज, शर्ट for Jesse, but it ended up working better for these scenes. If आप want to pick up one, the t-shirts can occasionally be found on eBay, as they are no longer in production."
link So... it's probably very rare to find that exact same shirt.
There's another link that talks about it, too.
link Sorry, I looked because I wanted to see if I could find one, but I couldn't. I'm sure if आप keep your eyes peeled, though, you'll eventually find one someday! Don't give up just yet!