For 1 PokéCoin in the shop, you can get the following: Ultra Balls × 20, Pinap Berries × 15, Razz Berries × 15

• Rotating 1 PokéCoin bundles in the shop! New 1 PokéCoin bundles will be available in the shop each week as one-time purchases. The contents of these bundles change weekly, so be sure to get what is available each week. Right now, a new 1 PokéCoin bundle is available for you that contains the following.
• Ultra Balls × 20
• Pinap Berries × 15
• Razz Berries × 15

You can access the above bundle from now until Monday, May 4, 2020, at 1:00 p.m. PDT (GMT −7).

Source: https://pokemongolive.com/en/post/updates-20200427/