One other difference is that the vendor on Gunbroker may not have the same return policy as Dixie.
The Wholesale Hunter return policy seems a little contradictory, since it says no gun returns, but then elsewhere it says to contact them to return unopened, unused merchandise that may be defective for a refund or exchange.
The difference seems harmless unless there's a real problem. But the vendor says that they will try to work it out.
I wouldn't worry too much about it as long as you're happy with the unfired gun when you open the box.
Also, Dixie specifically says that their Frontier stock is made of walnut, while the Wholesale Hunter ad says its "select American maple or walnut".
Unless Pedersoli has changed their stock wood, the rifles should have the same description but for some reason they don't.
I watched a video of Pedersoli's stock making operation and at the time they said that all they used was American Black Walnut.