I'm having a terrible time locating Avery or HP transfers for dark shirts. I've tried Michaels, Jo-Ann Fabrics and Office Depot and can only find Wilton. From what I've read, they may not work very well. There's not a Hobby Lobby near me. Anyone have any other suggestions to purchase from retail? If not, I guess I'll have to buy online and hope to receive them before our MNSSHP trip on 10/12.