Though a rare thrift store find, I actually found 2 Mambo shirts in like new condition. Picked up each shirt in the $2-$3 dollar range. A nice little profit on this one. These shirts are big in Australia, the colors are so bright. So keep an eye out for these next time you are at a thrift store, chances are you've probably never heard of Mambo before. Here is a picture of the inside tag. offer free shipping if you do find one because they are very light shirts.
As with most clothing the larger the size usually means a higher price on eBay.