My guild sells them $1 for 1 or $5 for 10. Yup, $5 for 10. The theory is that people will buy the $5 (which they do) and the ticket is only the small cost of the paper.
Would I spend $5 for 1 ticket...only if I dearly loved the quilt or if I was donating to a specific cause. Normally I would not pay $5.
Another organization I belong to sold tickets for $5 each and they made a lot less money than the guild who sells 10 for $5.
Hope that helps.