I don't think Agile has the same mass appeal as the tracker tariff, peak prices are still pretty high and it requires a bit of effort to get the best out of it.
I'm trying to find tracker prices from last summer, earliest I can find is Dec 22.
Tracker is surprisingly good (at the moment). The only way Agile works for most people is if you can shift your load away from peak times, so if you work a 9-5 or have kids the peak rates are right when you want to be cooking which I find is the major energy spike in our home.
For historic prices try here : https://energy-stats.uk/download-historical-pricing-data/
Gas from October 21 & Electric from Jan 21