There is a thread for asking how much an item is worth, I'd suggest using that in the future;
Forum/viewtopic.php?f=20&t=3719854However be aware that most very recent event items are not going to have a set value right away, especially during the event the value can fluctuate a lot because more people may be looking for it now, than later. So whatever it may be worth today may not be the same as what it is worth tomorrow, and so it is difficult to give you an answer for this question. I would suggest checking on the Easter swap thread, see what people are offering for the egg, or what they are asking for it, and decide from there where you would like to value it.
Additionally, please do not bump your thread unless it has fallen off the first page of the help board, as it is unnecessary can be considered spam. It can also make it look like someone has already answered your question (a lot of us in here just look at the number of responses on a thread so see if any have not been answered yet), so its not helpful in getting your question answered sooner.