Have you ever bought expensive organic sweet potatoes in order to grow your own sweet potato slips only to find that it was more complicated than you thought? 
I have sweet potatoes down to a science and know how to get them to grow. Look at the pictures and the roots in them. I won't be sending you a two inch slip because I have a better way of starting them than those corporations that charge an arm and a leg.
You also can order ahead if you wish to have your place in line. I will make sure to mail you them as soon as its safe (cold weather) in your zone and mine (zone 4).
 
Ten sweet potato slips for $50