welcome,
good luck finding a "blued" pre-b gun.
while you may not want to pay too much, whatever that is, you will need to be real patient and then be willing to jump at that moment and hopefully someone with 5 bucks more wont want it more than you do.
theres a saying...."buy once, cry once". I would venture to say that everyone on here has "been there, done that" at one time or another.
not sure what you endgame is either. but thats up to you.
if you want to consider, you can always buy a used/surplus and have it refinished in whatever color/coating you want.
good luck