Help needed to buy a M9

[Xaero]

hi, guys. Nice to meet you all.

I am a new M9 fan and now i want to get my first one to use as a tool. My request is simple: factory made(best made in US,no homemade); relatively cheap(less than 100 USD,cuz i 'm not a collector yet); best with black blade(not necessary).

I found many M9 sellers on ebay but i'm a newbie in M9 kingdom. So please help me to choose one (or some ). Any help would be appreciated.

Have a nice day.

Ciao