Oh how funny! Asking us to tell you where to find illegal items. Knock Offs are an infringement on a copy-written item. Designers have their designs copy written so no one else can legally sell the same design. AS with books things like clothing, purses, shoes, music and movies are protected by law. Knowingly buying them is near as illegal as selling them. It is stealing.
LIL

Wow.... Costco and Target, Kohls usually have very similar shirts. DH loves the ones from Costco.

Liljunkr is right. Knock-offs are illegal but you did ask about cheaper versions of the same style shirts. Terilyn gave some goo places to shop -especially Kohls seems to carry lot of that style type.

Tommy Bahama does not make unique looking items and you are sure to find something that passes for the Tommy Bahama 'look'. The link below show the current TB styles. Except for the ones with the actual Tommy Bahama logo you can easily find similar styles in any department store. Remember the quality of other brands may not be up to par.

Don't forget places like TJ Max and Marshals where you just might find an actual TB shirt at steep discount.

Here is a link that might be useful: Tommy Bahama Shirts

When someone likes a certain brand, they are not usually thrilled with knock-offs. I do know they are pretty expensive, even the woman's clothing.

There's always eBay.

IMHO it's not as easy to pull off a knock off in men's apparel as it is women's. A shirt is a shirt is a shirt. Usually the fact that it is a TB is the distinguishing factor. Women, on the other hand, have distinctive styles of clothing. We can look at a designer original and duplicate it. Add our personal touches and know one is the wiser. Or, leave it exactly like the original and few if anyone would comment. I say let him have his Tommy Bahama.

I bought my older son a TB shirt and slacks for his birthday years ago. I wanted him to look well dressed for dates as he was now out of college and needed to dress his age. He looked like he was playing dress up in daddy's clothes. On his slender, tall frame, everything hung on him like the proverbial barrel. Had to return it all and cross TB off our list of gift ideas.

There's always the outlets. I've seen the home goods at TJ Maxx and First Tuesday, and the mensware at Nordstrom Rack. I've actually never seen any TB fakes.

Here is a link that might be useful: Tommy Bahama outlets

You probably couldn't spot a fake unless you were an expert. Fakes aren't just sold at gas stations and flea markets. Upscale department stores will knowingly buy fakes to sell for the same price they get for the real ones. Some fakes are obvious. Some aren't. Ergo even if you try to buy legal items from a legitimate source, a person may still end up with a fake.