I think their minimum is $35 (free shipping at $75). Like them on FB because sometimes they offer nice discounts, typically 10% off and free shipping with just $35.
But yeah, they are wonderful, great items, great customer service. The only down side is that the pix on the web site do not properly represent their colors, so call and see if you can get them to send you a color card for the variety of thread you want. The color cards are made of real thread and are quite inexpensive.
Also, check their trade show section to see where they will be doing appearances.
I love their thread too.