I recently applied for a METV. The official requirement listed on the application was 6 months worth of bank statements showing a minimum balance of 200,000bt.
I provided a set of statements showing a final balance of over 200,000bt but that had only been in the account for the previous 3 weeks. Prior to that my account had been fluctuating between about 5000 and 40,000bt, albeit with regular deposits.
My application was approved.
From this, I guess what my particular consulate wanted to see from the statements were:
Do I meet the minimum requirements, and
Were there regular deposits coming in each month (ie do I have an income)
So, obviously your mileage may vary, but you may be able to get a visa with that plan.