I agree with Krissy.
E-bay has a list of bidders (in fact, bidders themselves - not just sellers - can see how many people they are competing with!), so he should know that.
If he wanted to make $20 (or whatever), he should set the starting price at that.
When I run my auctions I do an auction price starting at $0.99 AND I have a "buy it now" price at $10. Some people (like me) are too impatient to wait 7 days for bidding to end (plus the days for shipping to actually get the thing!) and are willing to spend a little more for the convenience of guaranteeing they get the item.
Also, shipping prices can be tricky. For instance, I am honest and only charge $5. This is $4.90 for the box, and the ten cents for tape, stuffing and any other materials I may need to secure the item so it's not damaged if the postal workers were to drop it or throw it in the truck, or something.
Some people do "shipping and handling", or "shipping and processing", which could include the postage price, the price of boxes and other packaging materials, their TIME for getting it ready to go to the post office, the gas to get to the post office, etc.... so yes, $20 could be a real shipping price, depending on exactly what is being charged for. Also, postage for overnight delivery, or next day, or even 3 days is a lot higher than regular postage to have things sent "slowly" (I always chose normal, and usually get things within a week anyway)