These are appreciating fast and there are only ten out there. When BG4 sold the original 10 last March they went for about $250 each. There have been none auctioned in 2018. The last two auctioned went for $1400 on 6/17 (#05) and $3800 on 12/17 (#02).
I would not sell mine for less than 1 btc, there are only 10 of which very few are ever available. They are also stunningly beautiful.
Totally agree. The only problem with the design I have seen is the bolts protruding slightly from the plexiglass. If they could have been countersunk so the surface was flat the piece would be even more beautiful. May not have been possible with hardware available at the time though. Still the most beautiful physical bitcoin out there.