Wow. Bad platform with lousy executions and higher commissions, isn't this a treat. No more MKT PRT (which resulted in better fills 90% of the time) orders either.
Market with Protection executes at the current best price and submits the remaining at closest limit. I believe it's generally used for large orders to reduce slippage, however it works (worked) great for me during relatively quiet hours compared with regular MKT. IB commissions is what I was talking about (2.75 vs. 2.40).
$5.50 RT is the bundled price. Unbundled for TF starts at $4.30 RT ( ($1.20 + $0.94 + 0.01) X 2 ). Unbundled for TO starts at $5.12 RT ( ($1.20 + $1.35 + 0.01) X 2 ).