I seriously doubt that discounts will ever apply to sale prices...I know most places will not apply a further discount to a sale price and I see no reason why they will either.
And then considering they are eating the additional 25 or 30 dollar cost to them to ship it for free...Dream On...lol.
Interesting. I did just make a purchase from the website, and I got that code in an email... It might only work for me, idk. Hopefully I won't need to buy anything again for a very long time.