Search for erroneous prices of an online store, with what?

Question

Parsing

In one large online store I found a product at the wrong price, they just made a mistake by an order of magnitude, either the operator did not print the number, or something else.

If this is not to be looked for by viewing, but by some tools?
Moreover, I don’t need to shovel the entire site, it’s enough to select a list of brands and look for obviously outrageous prices among them. Found somewhere to write down.
As I understand it, each brand can be viewed in one go, so it seems that blocking from the site does not threaten? Walking once a day is enough.

I will be grateful for hints.