Definitely go lower. It doesn't matter how many tickets you sell, it's how much money you take in. Do $1 a piece, 6 for $5 and 15 for $10. You have to really entice people to let loose of the bigger change. They will go for the $10 more easily if they think that they are really getting a bargain. We're all bargain hunters at heart...and who can pass up the bargain of the day?!?!?!
Have your tickets displayed this way...
Singles for $1
strip of 6 for $5
3 strips of 5 for $10
Make your tickets up in strips of 6 cutting singles off of the strips to get your $1 tickets and your sets of $10 tickets. That way you will get your 1's, 6's and 15's off the same printing of tickets.
People setting up raffles are often thinking that the money comes from single ticket sales, but it really comes from multiple ticket sales. It's just costing you the paper it's printed on.
Seeing is believing. Can you tell that I have done a lot of fund-raisers? LOL!!! Wishing you the best on your quilt sales.