Upgrade/save/repair... or not?


I have 'recently' bought a Batavus Course, I believe early 90's vintage. It's a 62 cm frame, wich fits me quite well.
There's some grime and rust but the worst thing is: a stuck seatpost. Really stuck. It's on the right height for me, however.


So: leave it there? Or getting it 'unstuck'? Leaving it there is making transportation harder in a car. It's also harder to resell, if I am going to do that.
Or take my loss and resell it? I missed it when I bought the bike...


I have a slightly better 'old' bike, so this one is for practising my wrenching, or maybe repainting (with a brush?)... not sure yet.


What would you do with this bike? It's straight ('met losse handen' ging prima), build up from Reynolds 501. Not too bad... and I have spare parts to upgrade 'stuff'.


Help!


Cheers,


Jan