If no price was agreed upon in advance, a "market standard" price applies. You have commissioned a service, a contract was concluded. He receives his remuneration for it. Just learn from it.
Since it is understandably difficult to determine where acquisition ends and the contract begins
The contract begins immediately, unless something else has been agreed upon. We are talking about consulting products here. There is no "this is my idea / my advice" and afterwards one thinks "I'll buy the idea." Consulting is not a work that is previously described and offered, then commissioned. As soon as brainpower is active, the clock is running. Consulting does not owe success either.
We are talking about consulting products here. There is no "this is my idea / my advice" and afterwards one thinks "I'll buy the idea". Consulting is not a work that is described and offered beforehand and then commissioned.
And above all: none that you can try on and where ticking "wrong size / wrong color / don't like it" is enough for the sender to cancel the credit card charge as a courtesy ;-)