How can those few people - and again narrowed down to the population mailing letters AND needing stamps AND seeking discounts AND willing or ignorant enough to do/risk fraud - with that little revenue per item, make a half-price stamp operation worthwhile?
The Venn diagram of old people with limited mobility (can't just drive to the post office or grocery store) and on a fixed income (they crave those discounts) is nearly a perfect circle of the people that fall for internet scams (fails to understand that literally anyone can make a shopify store and accept card payments).
