Great news. After a discussion with Simon from Roboform, he agreed to give us a 20% off discount code for Roboform, valid until November 30. In order to purchase Roboform with the discount applied, you have to simply visit the following link: Roboform discount. If you look at the title you can see "Roboform Chrome Special Discount", that's us :).
Anyway, another option would be to use directly the Roboform coupon code CHRM1, which will automatically reduce your order with 20%. So if you have been waiting for a special occasion to buy Roboform with a discount, now's the moment. I must admit that I'm quite happy because they've visited this forum and decided to give us a special Roboform discount.
As a note, if you intend to order more items, I've seen that when visiting roboform.com directly and going to the purchase page, the Discount Code field at the bottom doesn't show. If you go to the Additional Licenses tab and then go back to Single, you'll see the Discount Code field and you can enter the coupon code in there.