A $100 dollar gift care could be legit. A $1000 is obviously a Scam. What should scammers do?

 If I get an email offering me a $1000 for I DON"T KNOW SINCE  I ignore it and don't even bother looking for other signs it is a scam. 

If I get an email offering me $100 dollars I may look more carefully and often they are legit (most common is to give a per-publication review of a math book---sometimes just questions, but more often a written report). 

Most offers I get are either $1000 or $100. Today I got one for $750 which inspired this post (I ignored the offer without checking). 

Which nets more people $100 or $1000?

1) If people are like me then $100 fools more people. But people like me will still CHECK CAREFULLY I sometimes feed the email into ChatGPT for an opinion to see if its a scam. (Spellcheck still things ChatGPT should be spelled catgut.) 

2) Are there people who would fill out the survey (or whatever) for $1000 but not for $100? I ask non rhetorical as always. Are such people more gullible?

Would scammers make more money if they offered $100 instead of $1000 dollars?

1) More people would fall for the $100 scam. Or maybe not---do some people not bother if its only $100?

2) Depending on how they are scamming you, will they get less out of it if they only offer 100?

Here are types of scams:

1) They send you a check for $1000 + x and say WHOOPS- please email us a check for x dollars. I've heard of this in the Can you tutor our daughter in math? scam. For this one, offering 1000 nets the scammer more money since $100+x, x will be smaller than $1000+x.

2) They want to harvest your personal information. For these I don't think they will gain more if they do 1000 vs 100. 

One more thought:

1) I said that for $100 I take is seriously but for $1000 I don't

2) I said that $750 I do not take seriously.

3)What's the cutoff?  Obviously $289.