HTC offering up to 30% off on its products in the US, but this deal is valid for today only (ends at 11.59PT time). One thing to note is that the HTC only has limited stock, so some of better deals might sell out at some point.
The discount tier follows:
Save 30% when you spend $650
Save 20% when you spend $500
Save 15% when you spend $150
From this, we can say that HTC has tailored these discounts in such a way that they match up with some of its devices. For example, the HTC One A9 which actually cost you $499.99 (equal to $500) so you unlock the 20% off tier. The M9 costs around $649.99 which come in 30% off tier and the lowest tier is just for HTC's budget devices and the Nexus 9, which isn't a great deal as only 32GB WiFi version is available in stock and that too in white color.