The Cobras were shorter bows...I had a Cobra and Cobra II but sold them as too short for my draw and I prefer the Explorers, Explorer I, and Explorer IIs...and the Safaris. Great bows though...and if in good shape will sling an arrow great.
The bows it depends on their condition to be honest. I have bought Browning Nomads and Wasps for $75-175.......and Cobras for %150-200....and my Explorers have been $150 to 300 but every one of them is in MINT condition, now dings or scratches, straight limbs....all but one has the small Harry Drake tips...green glass on Explorers and brown glass on Safari.
If interested shoot me a note and will give email and can send pics ...serial numbers which will give idea of age. Biggest thing for me is condition of finish, if there are cracks in glass whether they run vertical or horizontal...and how deep they are...if limbs are twisted...if anything was drilled or screwed into riser or limbs and weight of bows at draw length.
Good finds...and if in good shape can hunt with them still. They are fine bows...would love to see pics.