How to sell vintage hot wheel cars?

You need to find collectors obviously to get the most for them. Someone else who understands what you have and will give you some value for them.

eBay is easy and can help you get them in front of people. You can also see what people are paying for similar cars before you put yours up. That way there won’t be any huge surprises. Usually you’ll get better value selling them individually, assuming they are worth more than what people pay for shipping. If not, group them together.

If you live in/near a major city, there are folks who specialize in car memorabilia, it might be worth finding one to give them a call and see if they’re interested. They have to make money on them, so you might not get top dollar, but the right person could get the money to you all at once.

It also looks like there are a number of hot wheels guides and groups online, Do a quick google search for collectible hot wheels and you could probably find someone with advice specific for your collection.

Good luck.