OnePlus is currently running a sale on the OnePlus 6T. The OnePlus site in the US, the brand is selling off the T-Mobile variant of the 6T for $349 - a full $200 off the original price. In case you're wondering, that's for the Mirror Black T-Mobile variant with 8GB of RAM and 128GB of storage. Remember that OnePlus phones don't offer expandable storage and in case you were wondering, the 6T is no longer available directly from T-Mobile. Although the phone is already over a year old at this point, the OnePlus 6T was still one of the fastest smartphones of its time thanks to the...
Source: https://www.gsmarena.com/deal_tmobile_oneplus_6t_is_on_sale_for_349_-news-41161.php