So this isn't really a FS posting but I am trying to figure out the value of my set-up that I am looking to sell soon. I have a Nikon D80, Sigma 30mm 1.4, Tamron 28-75 2.8, and SB-600 Flash. Everything is in great condition, was purchased new and I spent probably around $1800-1900 total. If I were to sell everything together, could someone please make a suggestion as to about how much this is worth? Thank you for your time.