If something is out of stock or not available the third party vendors will price gouge the items! I looked for a Mugan 5 B heatsink for my brother and third party vendor wanted $133 for a $56 heat sink!!The ads are easy to skip even for the most tech illiterates, because they can read it's not the item they were looking for. What's really tricky and deceiving is the add to cart or buy now option from a vendor (other than Amazon itself), that sells the product even for a $100 more than the lowest offer. Most people will add/buy now without ever noticing there are other vendors, mostly because this option is somewhat hidden in the right corner, right below the add/buy buttons, surrounded by other things to make it look cluttered and uninteresting.