For those that aren't aware, price points are the point where someone will make a decision to buy or not. As the price increases, it generally takes more to convince someone to buy.
However, some prices can be a little different but take the same amount of convincing. For example, if you sell a report for 98 cents, you can probably sell the report for $1.98 without a drop in total number of sales, as it takes the same amount of convincing to get people to pull out a credit card (or Paypal) to sell a product at either price.
$5 is considered by many to be a price point. If you charge $5 or more, you'll need to do a bit more convincing that if you sold below $5. $10 is probably the next price point after $5.
IMO and experience, I generally don't sell anything for $5. Instead, I sell for $7-$7.95, because I believe that anyone that will pay $5 for something I'm selling will also pay $7.
The differenced between $5 and $7 may not seem like a big idea, but assuming you'll sell as many at $7 as you do at $5, 100 sales is an extra $200 in profit.
I have a question for you both as a marketer and as a customer. Is there something you would pay $37 for, but not $47? Is there a price point in this example that would take more convincing for you to buy?