...You managed to miss my point. I also compared it to managed funds (in performance fees - using YOUR example of not paying whilst in drawdown; I simply queried whether you think you should pay more when the system OUTperforms?)
Look - you missed it. What I am saying is - in my opinion - you buy a system. For $10, $100 or $1000. You like the system. You like its stats etc. And YOU decide to trade it. Do you owe the system provider any of your profits? Do they owe you a refund because the system went into drawdown? Are you seriously suggesting they do?
So - assuming (and that's a big assumption) you agree with me in buying a "one off" system...how does that differ to a "signal provider?" If you like the newsletter's philosophy and disclosed stats etc enough to use it - that's your choice. That's my opinion. It's your choice whether to keep going or not in a drawdown. Again - does the vendor owe you anything? Do you owe them anything?
Of course- there's nothing to stop a vendor offering the money back - that's their business choice.
...I only invest in one fund, and I'm the investment manager.
Buying a system that you then "own" is different to a ongoing subscription. I agree if you see the stats for the system and then buy it and assuming the stats were correct, the vendor owes no refunds. For an ongoing subscription it is different.
Buying a system is like a buying a lawn mower how you use it is up to you. Subscribing to an ongoing subscription that losses money consistently over the defined period (say 1 month for short term trading portfolios or 3 months for intermediate holdings) is like continuing to pay for a gardener to work on your garden but with weeds growing faster than they are cut.
On outperformance, it is up to the vendor if they want to increase the price of their subscription as their signals keeps generating better performance than the last period. I will bet that given the choice, people will be more than happy to pay higher subscription fees next period if this period performs better than the last as opposed to paying for a subscription keeps losing money.