I think XONE's market cap of $840M is where AMAVF will be in 6-12 months as people continue to discover it and they (likely) announce FAST EBM and HiRes EBM intellectual property rights.
XONE ttm EPS (lost .91/share fully diluted) AMAVF ttm eps + .85/share fully diluted (lowest PE in 3D Printing Stocks)
XONE market cap: $840M AMAVF market cap: $312M
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So I think $150+/share is not unreasonable.
That said, I think they'll have a 2:1 or 3:1 split prior to reaching that level though- liquidity is an issue with the stock with such a tiny float and shares being tightly held.