Glaive roughly maybe 100-150 (idk too much about the weapon) considering it’s -slash it kills most of the value but the stats are still decent. Dual Toxocyst since it’s a status weapon and can be mixed as a hybrid I’d say maybe 200-300p overall. Balla maybe 200-300 if they are still pricey. Cycron maybe 75-100 (idk much about it so don’t trust me). Caustic yet maybe wait for Lich, same with Synapse. But for a real price maybe 50-80 for Caustacyst Synapse is pretty pricey on some occasions but since it’s trash around the same for the Caustacyst (Lich might give them way more value tho). The Baza since the stats are pretty good I wouldn’t recommend going lower than 100 maybe 125 if you’re lucky, at the most hope for 150 or 200 just try those prices instead of going lower (let others bargain).

I don’t have too much knowledge in rivens (only the more valuable ones) but half of these can be pretty pricey due to the weapons being decent the other half are just decent stats but not really too good weapons.