first of all - welcome to the community.
What are your goals, visiting MoT? What is your profession and what is your background? Without this, I have to answer like radio yerevan: It depends …
What would you like to achieve? Would you find the time to follow the courses? Do you scan the web very often for new ideas and information? Would you like to learn new things? Will you attend the conferences?
If you find the time to attend the master classes when they happen (only once and at a specific time), if it is sufficient for you if you discuss topics just in the club and hope to receive an answer, then probably no.
I have found the 280 € well spend, comparing with ISTQB certificates that might provide you with a piece of paper (but will, at least in Germany, cost you 200 €(book and exam costs)) or even a full course, that is around € 1500 for four days.
The content is up to date, it is easy to access, you can download the video to watch when you are on a business trip, etc.
Please DM me directly if you have any more questions.