Depends on whether he has a store or not where he can list for pennies.
If he is just listing with the regular Sell Your Item page and does not have a store then he can take advantage of the 50 free listings per month and then the free days that happen now and then to list any item no matter what price for free.
I think there was just 3 free days or up to 50,000 items or something free. Everything gets dumped on
ebay at those times.
If he has to pay fees, goes over his 50 or something, then the higher the starting price, the higher the listing fees are. Unless he has that Featured Seller or whatever it is for being a good
ebay boy. Oops that doesn't sound so good. Didn't mean it badly.
Hundreds of dollars as a starting price costs $1 - $2 I think so not much compared to what he makes if he sells one, once in a while.