Prior

Is it worth building?

You have had the idea. This finds out who else has, what they charge, and whether there is still room for you — and it is straight with you about which bits it checked and which bits are guesswork.

The honest answer. "I don't know yet" is a real answer and changes the verdict.

Free, six checks a day, no account. Takes a minute or two because it is really searching.

Searching for who already does this… A minute or two, because it is really looking. Go and do something else — it will still be here.