When purchasing Xbox Game Pass Ultimate your first month is $1.00 but there is a hidden conversion that is advertised but only in small print. Any existing XBOX Gold months left on your account will also be converted to Xbox Game Pass Ultimate months... So....
1. Purchase Up to Three Years of Xbox Live Gold. Costco has 24 months for $94.99+Tax here: https://www.costco.com/xbox-live-...75009.html
2. Head over to your Xbox Account apply your digital code for XBOX Live so that you have as many years (up to three years) on your account.
3. Purchase Game Pass Ultimate 1 Month for the introductory price of $1.00+Tax
4. You will get 1 Month of Game Pass Ultimate + All XBOX Live months on your account will also be converted to Game Pass Ultimate months.