Replcing internal door linings & casings

[Duffers4768]

I have a 1930's property and the door frames are heavily painted and I am looking to have the complete casings replaced.
Could someone tell me how much I should be paying to have these replaced by a professional.

 

[dude_diy]

I also have a 1930's property and recently had a joiner in to replace 4 doors and the casings as well. He fitted 4 doors, replaced the casings with rebated casings, hung the doors and fitted the door furniture. He also supplied all the materials, doors, hinges, handles, so everything. We picked the door style we wanted and what handles as well. Was a cash in hand job, and he charged
£80 per door which we thought was very reasonable. He was all done in a day. We had had other prices quoted which were all around that price. Hope this helps.