I have a Blichmann 14.5 Gallon Fermenator with threaded fittings that I picked up off of Craigslist for a pretty good deal. I think I paid around 429.00 for it. I shopped around quite a bit to try and determine the value of what I was buying. I determined that the pricing is pretty much the same across the board for these items (Yeah, I'm sure someone is gonna chime in with....I go it cheaper at blah!).
Give or take a few dollars you can plan on paying ~600.00 for the 14.5 fermenator with the replaceable threaded fittings, and ~830.00 for the model with the tri-clover fittings.
If I had it to do over again, I would go with the tri-clover fittings. They are a snap to put on and take off, and they are a cinch to clean. Since I started working in a commercial brewery I have really come to appreciate the convenience of tri-clover fittings.
The threaded fittings take a little more time and effort to remove and clean, and re-install. I have found that you need to be really careful not to over tighten as the o-rings will blow out pretty easily if you aren't careful.
If you can wait on it, I think your best bet is to find something used that is in good condition. The other option is to go with Austin Homebrew Supply
. Right now they are running their 10% off sale, fifty states, fifty days.
10% off 600.00 or 830.00 translates to significant savings for you.