Here is a gorgeous fan palm from the Dominican Republic. It has silver undersides to the leaves. This can grow up to 40', will eventually grow in full sun and can tolerate down to 27 degrees F. You'd be buying what you see in the second photo(Or very similar to)...
This is a spectacular palm that originates from Cuba. Once mature, it holds very stiff, thick and circular leaves which have a very glacous or White/Silver undersides to them. It can grow up to 20ft., will eventually want full sun and can easily tolerate 25 Degrees F. For more...
This fan palm's leaf's underside are silver and originates from Mexico. It can grow up to 15', will want full sun and can tolerate down to 25 Degrees F. For a specimen picture, try this link: http://palmguide.org/image.php?image=81103B_2001110842660 . You'd be buying what you see in the...