I called Costco to speak to the phone kiosk guy and was told they no longer sell phones as of yesterday!
From TMO:
Mobile carriers in the US, including T-Mobile, have partnerships with retail outlets to sell services to customers visiting those stores. T-Mobile made a big deal about expanding to “National Retail” back in September of 2021. Unfortunately it looks like the company responsible for mobile sales in Costco, called Wireless Advocates, has suddenly shut down without notice.
According to posts on Reddit, Wireless Advocates LLC has completely and suddenly ceased all business operations as of today, December 5th. Costco was apparently blindsided by the news, finding out along with employees that the partnership was ending due to company shutdown.
Wireless Advocates gave no warning to any employees, opting to hold a conference call earlier today informing them of the news. Most employees were not even informed of the conference call however, and found out about their layoff when they arrived to work.