Trending @Accenture; Should I spend 25k for a training to upskill myself?

I have been working in Accenture for last 2.5 yrs. as an SAP UI5 developer. Have total experience of 8 yrs. in SAP. Seeing the market trends I have decided to upskill myself in SAP BTP and CAPM technology. There is an online trainer Anubhav Oberoy who provides compact online training in the same topic. The training would cost 25k. I have discussed with some of my seniors and they said not to invest that much money for it. But self-learning will take much more time initially as in my project there are no opportunities to work in latest tech. These new skills will be helpful for switching jobs as well. Accenture is providing a training on the same topic but the seats are already full. Please provide your suggestions. If anyone has done the similar training, let me know.