like i told the OP, for me its a matter of time vs. money.
you could certainly draft every pattern in the DJ but the amount of hours its going to take to do that vs. the cost of the software from joanns' for me its an easier decision.
i have a spare $38 but i don't have a spare 55 hours (i'm sure it will take longer than that) to draft everything.
if you have more spare time than money the book is all you need.