A friend of mine purchased some things at an estate sale and has no clue what these are worth.

The camera is an Exakta Varex IIa/1961.
Lens 1 is a Domiplan 2.8/50 Meyer-Optik Gorlitz 2839502.
Lens 2 is a TELE-LENTAR 1:5.5 f=300 mm No. H72866.
Lens 3 is a P. ANGENIEUX PARIS F . 35 1: 2.5 RETROFOCUS TYPE R1 No. 445105

Any clue what these are worth and what to look for? There is a bunch of accessories but no clue if they go with the Exakta.