I've seen GR3's sold for $1200 and they're non-ejectors. I would have to think that the GR4 w/ejectors and a bit more engraving would likely be more than that.
Personally I think that the GR cross-bolt makes it a superior gun for heavy use but that is just a feeling and not backed up with any data of any kind.
OTOH I have not heard of any problems with BSS aside from someone here mentioning the triggers needing attention. The GR is not particularly w/out fault in that regard either but then both it and the BSS are field,not target guns.
JMO of course


Dr.WtS
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