Other than missing about 8 cards from the early 40-card packs and having not bought the latest two chapter packs yet, I have one of everything else and 3X of the Core Set. (I haven't rebought the recent reprinted waves)

1) Would there be interest for the entire collection?

2) If so, what's the typical reduction in price compared to what I originally paid?

Someone offered to buy about 2/3rds of it, but I don't know if I was offered a fair price and more importantly, I have no idea if I'll be able to move the remaining third of it if I agree.

Thanks in advance…

Someone here in Singapore just sold a collection similar to yours for USD $490 (GSD$599).

Not sure if its cheap - I didn't buy it as I have most of the cards I wanted anyway.