Hard to tell what it's street value is, as many are often willing to pay more these days with the upcoming election and all.
Taking into consideration that a complete Vector-built Bulgy RPK-74 rifle sells for $970 at Atlantic, and an NDS-8 receiver is $160 by itself, I'd guess that you might be able to pull $600 for the kit. However, I'd personally start at $700 shipped and go down to $600 if need be. Unless you really don't want it, I don't think you should part with it for less than $600, as the value of it may sky rocket after a year when the kits are dried up.
http://www.atlanticfirearms.com/program ... Prodid=474
Taking into consideration that a complete Vector-built Bulgy RPK-74 rifle sells for $970 at Atlantic, and an NDS-8 receiver is $160 by itself, I'd guess that you might be able to pull $600 for the kit. However, I'd personally start at $700 shipped and go down to $600 if need be. Unless you really don't want it, I don't think you should part with it for less than $600, as the value of it may sky rocket after a year when the kits are dried up.
http://www.atlanticfirearms.com/program ... Prodid=474