I started with the harbor freight special, was great for 9mm but bulk 223 was far too tedious - 75 cases per drum was about max capacity for 223. I think with coupons I got it for around $40 after tax & picked up 2.5lbs of pins off amazon for $20.
For efficiency's sake, it didn't take me long to go the FART route from Cabelas with a $20 off 100 coupon like you have. I also had points built up so that helped a bit too. Even if I had to pay full price & tax, it was worth every penny. Unless you have coupons, it's pretty much going to be a wash between local + tax and online + shipping. Right now I tumble about 600 rounds of 223 per batch, my limitation being the boot rack in the dryer not being able to hold much more weight. Makes a hell of a racket when a garment bag full of brass hits the drum!
The frankford comes with 5lbs of pins. If you go for a thumler's, factor in another $40 for stainless media.