My only other concern would be that you've been selling your gear since July 2012. ( I come to this conclusion be cause your last post in something other than a sales thread is June 2012)
If after 2 years you have been unable to unload whatever you now wish to raffle I would have to assume it's either crap or over valued.
Instead of a "lotto" which right out of the gate sounds sketchy as all hell. Get a few of your trusted airsoft friends together. Sit down with your items and get a consensus of value for each item. Post up sales threads and be rid of it.
P.S. Pics will always help a sales thread. Laziness on pics will almost certainly cost you a sale.