I drove there yesterday (about an hour and 15 minutes one way), and they have not pulled everything out yet, and have stacks and stacks of those boxes still stacked in the back corner. I too thought it was a majority of race car kits, but apparently that was just a few boxes, with the majority being muscle, and 50s/60s cars.
The good news, Andy is very fair on the pricing of the items I saw that were put out, and from what I have heard from others that were already ble to go buy some. He has one area set up where they are priced at $20 each, or 3 for $50. Other items are placed in the normal automotive section, and I was able to pick up a Monogram Badman for $25, which I have not been able to land online because the prices are outrageous. So while many on this forum may have massive collections and/or narrow interests and are not impressed, there is no doubt in my mind that this will certainly be a great deal for a lot of people. He could certainly piece it out, and sell some items online for more than he will ask in his shop.
As with anything some will like what they have, some will not. Personally, I like being able to physically shop for kits, like a swap. I may see some things that spark an interest that I would not have thought, "hey, let me go look online for _____".