Update: I just checked the sold listings for swage blocks, and it looks like two of these got sold: one for $267 + $13.85 shipping, and one for "best offer accepted" + $13.85 shipping. There's one current listing for $325 with free shipping.
Considering that they had to pay 10% to eBay and another 3% to PayPal, their actual profit was about $86, less whatever they paid you for shipping.
My guess is that someone in Monroeville, PA ordered three (or more) of these at your $175 introductory price purely with an eye towards reselling them. Can't really blame them for seizing the opportunity, but they're not going to be able to repeat that precise stunt now that the regular price has gone up.