This is a recurring discussion here, and it fascinates me each time.
Is there really a difference between a seller saying:
1) Book costs $1030, but take a $30 discount if paying cash or check;
vs
2) Book costs $1000, but add $30 if paying via fee-based PayPal;
The only difference is mental, right? Why does the phrasing in #2 bother us so much more than #1? This is just a rhetorical question, of course...just one of the vagaries of human psychology, I suppose...fascinating.
People getting a discount.
People getting an extra fee.
People paying a fee they don't know they are paying.
Set to the music of Simon and Garfunkels: Sound of Silence