I would guess that up here in Canada you'd be able to get $1000 (Can) fairly easily or more with patience. The market values here are not totally dissimilar to the US (I can suggest this having imported a couple). While thinking about it, it might also help in selling to take some natural light photos that bring out the hue of the original bluing. Regards.
Ridolpho
$1000 (Can) is US $750. Out of curiosity Ridolpho, do you know what the import / export cost would be from Canada to the US (if I wanted to buy an Enfield from Canada) or US to Canada (if I wanted to sell an Enfield into Canada)?