there is NOT one.. (in that price point) if you are looking for a deal expect to spend around $250 - $300.
As for cheep models...
AGM, JG, Kart or Cyma M14's are clones of the TM. they are decent but need a lot of work in the gearbox to bring it up to snuff. They make a great base for a project gun.
The shopping list you will need to make it better... (& this is just the bare minimum)
new bushings / shims
reshimming (very important to do with these models)
new spring guide
new piston head
new hop up bucking
Echo 1 Socom 16 (if you can find one) has a decent gearbox but is under powered in my opinion, it needs a TB barrel, new Hopup bucking and better spring.
Aftermath makes a Socom 16 you can get for around $175 but it shoots 500fps w/ .20g out of the box. For a lot of fields that exceeds the FPS limits, but you can always down grade it.
G&P, G&G, CA make decent M14's but again not in the $150 price point.
and in my opinion the best one out on the market Stock is the Tokyo Marui.