I saved up eggs from last year in anticipation of buying out limited items this year. This of course was a gamble on my part (it was never said I would be able to do this).
You pays your monies and you take your chances.
Oh well, hopefully I can find some other use for them. In the mean time, I can understand not wanting event resources to persist over time. It will lead to a huge glut in the market and those with resources will end up buying everything on day one then sitting around doing nothing :P