Whatever they would have added as an PSU and have you pay for it a premium, you can buy for next to nothing online with better features and performance, while not generating a bunch of e-waste if you don’t need one (like me - i doubt they would have added a 100W charger with 3 USB-C ports).

Edit: Just saw they want 39€ for a 45W PSU with a 2.5m cable - go buy something better for cheaper, for real. If you are strapped for cash, this one delivers 100W with one port for under 17€: https://www.amazon.de/PAEBAI-Ladegerät-Netzteil-Pixelbook-ThinkPad-rosa-weiß/