They do have good deals. Looks like 40-60% off MSRP. It is a referral type of deal. If you sign up (FREE) you get a $5 credit toward a $20 or more purchase. If you refer a friend and they spend $40 (or $35 of their own money) the referral originator gets $10 to spend.
You can get the deals without any strings and a free $5 but most will try to get you to refer so they can get more money to spend. The Mustang PDFs are $139 I think. Rods are 60% off and they have some Frabill stuff.
Doesn't generate a ton of excitement for me but if you like American Rodsmiths then you can get a sale price.