Must not have ANY broken/warped externals and include box magazine. Must at least function and have no issues with wobble/the seating of the barrel. Must be para length outer barrel.
Don't care about actual performance, bipod, paint, scratches, etc.
Will offer accordingly but don't expect over 200 for A&K/Echo1 unless you've significantly increased the performance of it in any way (better motor, wiring, mosfet, more reliable box mag, new hop up unit, etc.)
If its CA I will pay more depending on condition but no more than 300 unless its been significantly altered.