Great stickers, hard to peel when not on a roll

Let me start by saying I love all the Stickermule stickers I've ordered over the years. This is the only time I will be critical: This is the first time I've received individually cut circle stickers, in other words, not on a roll of backing, and they are really difficult to separate the sticker from the backing. I ordered 50 stickers in three versions, two versions of a 1" circle sticker at quantity 50, and one 3" circle, quantity 50. All 150 stickers came individually cut. This is a minor gripe, I know, but man, these things are tough to remove when there's no roll or no "extra" backing to slip a fingernail underneath. Is there a minimum number of stickers to buy to make sure I get them on a roll next time? I've ordered quantities of 100 before and they've always come on a roll. Maybe that's the secret.