I love these threads that turn into a gripe session on EE pricing. The reality is the the prices are where they are because someone has paid that or close to the asking price in the past. In the case of the Inglis HP they haven't been made since the end of WWII and because they were made and issued in Canada they carry a certain cachet here for people interested in Canadian history. Add to this the fact the government announced all surplus stocks were being sent to the smelter there just isn't a reliable stock of these hi interest collectable pistols sitting on dealer shelves waiting for someone to decide to purchase them. As for the minty $750.00 priced Inglis HP's that is what they were selling for in the late 90's. I sold a group of 3 examples in the $800.00 to $900.00 range 3 to 4 years ago that all had a few cosmetic issues but were otherwise shootable examples.
As to the "Big Bang Theory" the one I listed for $1125.00 actually came after the ones listed for $1350.00 and $1450.00 also listed on the EE so I guess we are actually seeing a bit of a contraction in pricing. The $1125.00 asking price also included the usual haggle room as someone will always want to low ball you on your pricing. As a side note the one listed for $1450.00 includes several parts, a manual and a holster. The pistol can be had for $1250.00, an outstanding price for a cherry example, making the accessories a very good deal.
For $750.00 buy your self a nice used commercial Belgian example with no Canadian issue history.