The last time a grail level piece (which was actually 9 grail level pieces...9 moc 1st gen carded Polish in 2 separate lots, but becoming available at the same time) came up for me. I flipped a bunch of MOC Uzay's that I had originally bought cheaply to hold onto for a while to make more $ off of, as well as a bunch of other non US items I had stashed away for rainy day sales and pre sold a couple of the cardbacks and extra figures that were in the lots to friends for my cost(a. because they're friends and b. to offset the overall cost). I took less than I could have held out for for many of the items I sold, but in the end I was able to complete a set that it took me almost 17 years to finish(without pissing anyone off...amazingly enough). It was one of the proudest days I ever had as a collector when I assembled them all into one picture.
J