Cut the price by 50% on anything you see on HSN and Shop at Home to determine average retail value. It amazes me that people who can afford a high value coin like a ST Gaudens wouldn't be savvy enough to research prices before getting ripped off by the TV bandits.
Even for PCGS it is way out of line. Two morons put in nuclear snipe bids to win on the same item and now one of them has to pay it out.
if you check out the guy who wons feedback, take a look at some of the stuff he has been buying... it seems he has the cash to pay 760 bucks for it... http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&category=39459&item=3958987900 http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&category=41089&item=8311579840 http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&category=41088&item=3975232231
The good news is that HSN is very good about honoring their return policy. I know because I bought a couple of coins from them myself and returned them. So you aren't alone. The only way to avoid mistakes is to obtain experience. Unfortunately, the only way to obtain experience is to make mistakes. I agree with the advice that the safest [but probably not the most profitable] way to invest in coins is to buy them at or near the melt value of the gold and silver content. But the serious collectors will always have an advantage over the casual investors because the large gains will be in the overlooked rarities.