Well, depends. Someone's gross chip rack is someone else's Grail. There is such a variation of tastes that every section has a buyer. For every group who want mint THCs, ya got someone like Wonder puddle who takes some bike tires and makes a jaw dropping set.
Price is dictated by the market, but I'll say the market went nuts a while ago, so the statement that they are overpriced isn't exactly wrong...
Easiest way to not fall into that trap is to stay within your budget. Know how much you can spend per rack. Then if some Paulsons fall into that range, that would make them a deal....