Fix pricing mistake from #1982

Sell price of AKS74U_SD_DZ and AKS74U_Kobra_SD_DZ were wrong, since they
use 545 silencer (3 Goldbar). Sell price of Mosin PU variants was wrong
since it uses SCOPED not PSO attachment. @worldwidesorrow

Also corrected comment, extra Sa58 are camo variants while _DZ variants
are non-camo, so not entirely redundant

Lowered sell price of hemp, since these plants are pretty common. They
are guaranteed spawns In their spawn locations, and you can easily get 5
or more per server restart.

SQF/dayz_code/external/R3F_Realism/R3F_Weight/Weapons/Snipers.hpp

@@ -32,6 +32,10 @@ class BAF_LRR_scoped
 {
 	weight = 5.6;
 };
+class BAF_LRR_scoped_W
+{
+	weight = 5.6;
+};
 class Anzio_20
 {
 	weight = 14;