To buy or not to buy ?

A few days ago, in cold evening, a young salesman from Tochigi prefecture came to my house to sell 'Ya-a-ko-n tea' and 'wind -bell'.
He said both are good for our health.
But I didn't buy either of them.

And this evening, another young salesman came to sell 'dish towels' that were packed by the disabled man or children.
Is it really true?
If his words were true, I should have bought some.

But I didn't buy anything from both men because I couldn't beleive them.

They didn't get angry at all when I said I wouldn't buy.
On the contrary, both were very polite!!

After they went back, I felt bad.

Are there any good ways to know if they are swindlers or not?



A white shell of a snail among the stone wall