Disco 4 Slight Transmission Oil Leak on MoT Advisory

[hal3210]

I'm intending to upgrade to a 2010 Discovery 4 2.7 TDV6 GS and I found what appears to an ideal car, 1 owner from new, full supplying dealer Land Rover service history and all MoTs were undertaken at the same LR dealer. However I note the following advisories on the last MoT:

slight play front lower arm bushes
slight play center propshaft bush
slight transmission oil leak

Is the slight transmission oil leak anything to be seriously concerned about or is it just a main dealer being a bit over the top on advisories? To give an example, I took my old Land Rover into the main dealer for servicing and they often advised work which wasn't ever mentioned on MoT advisories as I took it to a trusted independent for MoTs that I've been using for 30 years.

Is it relatively easy for me to check if the leak is severe when inspecting the car and am I right in thinking that a transmission oil change could potentially cure the leak? How much would a transmission oil change be and in the worst case scenario, what's the likely cost of resolving a serious transmission oil leak?

Many thanks in advance for your help.