The manufacturer is running a promotion for today only that sees up to 30% taken off products available on the HTC store. You'll be able to save almost a third off listed prices should you fork out at least $650, which covers the HTC One M9. The brand new HTC One A9 is also included in the promotion, alongside the catalog of products.
If you're not willing to part with more than $600 to save the most, you can opt for the lower tier discounts. Save up to 20% when spending $400 or 15% if you add $200 to the cart. Do note that adding a few accessories to the order to take you up the discount tier tree may work out more cost effective after promotions are applied at checkout.
This promotion will run until November 10 11:59p.m., while stocks last. Unfortunately, the offer can only be taken up by those who reside within the US.