Can this be tool be used only as paid service, and there is no option to first test it for free by checking one or two addresses?
I know price you are asking is not big, but there are several alternative option that provide free address testing already.
Yesterday, I added an option to purchase 10 checks for 1000 sats, or about $1, so no. Honestly $1 is very cheap and by offering the checks for free, I run at an operating loss.
By the way, here is what the results look like:


You can also export the report as text, so that you can save it permanently.
A lot of competitors only display categories, like they say it's from CEX, MIXER, SCAM, SANCTIONED ENTITY, and so on, but my checker actually tells you which counterparties are linked to the address.