Well, if you’re talking about the big international HAMFEST I think you’re talking about...
Yes, you can usually get excellent prices and discounts, sometimes deep discounts, from the dealers and commercial vendors.
Is it enough to be worth the trip? Only after the fact will you know the answer to that; I would say that there’s a high probability that will be the case, but I can’t make you any guarantees.
Oh, if you go, don’t forget to be on the outlook for “leftovers” from the farm show(s) also held at the site. I have yet to see any, or know of anyone who has, but there’s a certain expert who lives in the area who insists these are there... even though he has never attended the HAMFEST at it’s new site.