In this day and age most radio systems beyond entry level radios are are sold just the Tx and tx battery - or - Tx and tx battery as well one or two or three rx's.

Servos are now more normally sold separately simply because with the mid range and up systems their is a hugh choice now in servos that we formerly did not have. The same goes for the hugh variety in aircraft flight packs or lack of because of BEC's in use with many electric airplanes.

It would be impossible for manufacturers to package complete upper level systems in the hugh variety of options.

Also consider for your Mark 11 a switch holder charge jack. about four bucks and most all my airplanes get them. Tower has the Great Planes brand and the Dubro brand. I much prefer the Dubro by far.

John