Sure, I'm not going to duck the question. In my view few things determine the price - brand value, labor cost, economy of the state, quality of materials and price differential relative to competitors in the same band.
In terms of brand and based out of Vienna they are certainly not in the same league as other Viennese shoes makers like Materna, Maftei not to mention Rudolf sheer. Even RTW shoes from Materna(made in Austria) is priced just north of 1k. Maftei semi bespoke runs around 900 Euros granted they are made in Romania. I doubt how much business Saint Crispins get out of Vienna if any at all.
Labor cost in Romania is even less given the current state of affairs than Hungary where in Vass are made and the price differential is staggering. In terms of materials I do not own any Crispins so I have not put the shoe under a microscope to know the quality of the leathers but from several high resolution pictures they do not seem any better I'd say in fact inferior to Vass. Please do not be led astray by the high shine, antiquing or whatever you may call it..
In terms of handwork the outsole is machine unlike Vass a hallmark of a well made traditional shoe...Also it has been proven that a all stitched sole w/o wooden pegs is superior and also more time consuming.
To me some of the idiosyncrasies that you see in Vass screams hand made unlike the crispins which looks just too clean too much refined..
I can go on but these are my premises that driving my opinion.