Prior
It finds the companies already doing this and what they charge. Then it reads every price back off the seller’s own page while you wait, so you can see which figures still hold today.
Any chat will answer “is this worth building”. None of them will go and check.
Gives you no score out of a hundred.
Every other tool in this category leads with one. A score is a number with no source, which is the one kind of number worth not trusting.
Reads every price back off the seller’s own page.
A link is only a promise that a page said something, and it is just as convincing when the address was invented. Every price here says whether the figure was still there today.
Makes what was found look different from what was guessed.
Before you read a word. Market sizes are nearly always guesses, and they are marked as guesses rather than dressed up.
Looking for who already does this… Takes a minute or two. You can switch away, but keep the tab open — closing it stops the search.