Righty-ho, firstly the first set of guns (or ones similiar) can be just decoration or can be airsoft weapons. I found them for £90 for the pair (but i cannot speak japanese so i dunno how much they'd want for posting). But if you want them to fire you need to buy two £90 airsoft pistols (taking it to £270 ) and be willing to then take them apart as E&I are hollow and the pistols internals fit into them, making E&I into firing replicas.
Also Dantes calibur is .45, not .50. But judging by the huge ejection port on them I would guess their magnum bullets making them very nasty.
Also Dantes calibur is .45, not .50. But judging by the huge ejection port on them I would guess their magnum bullets making them very nasty.