No any data feed that work with NinjaTrader and offer real time data will be OK for MarketBalance, if you connect NT with your broker then the broker data is OK

They are very much the same, MarketBalance work on NinjaTrader and cost less, MarketDelta and MarketBalance share the same ideas and most of the important features are the same, they do very in some other features

Yes, make sure to select Up/Down tick and not Bid/Ask calculation method

Yes, make sure to configure "Prices Per Row" to large number like 10 or 100 in order to collect several levels into one row

Yes, Cost is $750 in 3 convenient payments, price include life time upgrades. use this link the purchase

"Market Balance total cumulative volume" use the volume data as report by NT and you can confirm this with the using the VOL indicator of NT, you will see they match.

NT Market analyzer use different total daily volume data which is reported by the exchange/data vendor and it is not the summary of all the reported data but something different. you can confirm this by comparwe to the total volume reported by the VOL indicator, you will see they are different.

In NinjaTrader Control Center choose File-> Utilities->Remove NinjaScrip Assmbly, from the list of assmblies select Final.MarketBalance and press the Remove button.