Are you willing to escrow funds? Is the draw provably fair?
They do not need to use an escrow, they have given away so many btc's and other stuffs..
You can see the records on the Site Announcement board.
Once I won the "Custom Engraved Metal Coin", I do not received it (I think because Shipping problem) but the owner "swingline" gave me some btc equivalent to the Metal Coin's value.
Owner and moderator of allcryptotalk are nice guy, so you do not need to worry. If you win the raffle, you will get the prize as fast as you verify your address.