https://www.pcgs.com/news/indian-head-quarter-eagles-king-of-the-counterfeit-gold-coin these coins are going for about $400+ on ebay, but one has to really take a risk.
That's scary, I don't have much of a budget, unfortunately, so not big on the gold coins, but I do have a few, all but one were purchased in big four slabs, the one I bought raw I sent in to ICG for authentication and grading. Here's my favorite (today) I bought this in the Sales Corner here.
In the last year, I don't remember the exact date, I bought it from a member here. I've had good luck with that. I did buy a slabbed graded details $1 on eBay.