1.I just bought a Parker 51 Burguny demi boxed set vac fill with GF caps.Pen and pencil both work fine.
I paid 120$.Did I over paid or got a fair deal ?

2.Is it my immagination or the Parker 51s pen prices has been going down latly.When I say latly I mean in the lass 2 years or so ?
I remember 51s where going for no less then 100$ a piece and now I can see them going to less then 50$ on eBay.

I thought "51"s that were fully restored professionally cost a bit more (in the price range you mentioned). The cheaper ones on eBay are a bit of a gamble, are they not? They can come cheap, but may require that few extra ten dollars to repair/restore.

HOWEVER - you have failed miserably on the OldGriz Sumgai scale (Anything over $10 is an automatic fail - sorry )