new 3 tier rates

Where can I find information about the new bulb 3 tier rates before clicking the button to sign up.

What information are you looking for?

If you scroll down on the smart tariff page it gives you the rates for each region.

Aside from that, you can get it if you have an SMETS1 smart meter that Bulb can read (approximately 1/3rd right now - email them to check) or if you have a new SMETS2 meter.