The market tells us that sidelocks cost more than boxlocks. Of course you can make the boxlock more expensive via upgraded wood, hand engraving vs machine (maybe "hand-chased"), etc. Just putting up some other options, and offering a price comparison--from the same Spanish maker. The obvious conclusion is that the Bournbrook is very pricey, by Spanish boxlock standards. Whether it will appeal to many buyers at that price . . . perhaps we should look to the AyA 4 Deluxe. Per my 23rd Edition Blue Book, the then-current MSRP for a 4 Deluxe was $6900; for a #2 sidelock, $5700. Lots of #2 sidelocks sold in this country, while you'll look long and hard to find a new 4 Deluxe for sale.