The rate could change in October. They are not liquid investment. That being said all the finance influencer bloggers and YouTube have been talking them up quite a bit, especially with inflation being 9.1% they keep pace with inflation. Typical year they may only pay 2 to 3% is my understanding. If you don’t need money for 3-5 years like it could be a wise decision to purchase some in my opinion * I’m not currently a fiduciary or Financial Advisor, but a lot of people in finance community or finance blogs and YouTube channels I follow seem to like them and promoting them last few months