"Formal diver training with plenty of real experience,

 diving a wide variety of challenging shipwrecks with experienced 'expert' buddies in different environments...

  is the key to staying alive while acquiring a safe diving attitude." B2

All the training agencies listed on this page offer internationally recognized tech diver training

But some agencies technical diver training courses have simplistic course standards that result in very much more easier to accomplish tech diver certifications than others.

Is this what you want - An easy course in learning a safety critical skill set? If you do, then you're gonna die!

 I strongly suggest you ask around and stay well clear of any training agency, individual instructor, or dive shop offering you a cheap and easy route into tech diving.

Find your best local instructor offering the toughest course with no corners cut, the best equipment, the deepest and most challenging experience dives, taught rigorously according to the training agencies standards.

For one thing is sure about tech diver training...

 Cheap + easy + cutting corners = DEATH

For the highest levels of technical diver training involving the breathing of Helium mixtures - if you have to ask the tuition price, then you likely can't afford it...,

...and if you try to dive Trimix depths without Helium, then your untimely demise is 'only a matter of time'

Roll the dice & make your choice...