Unfortunately, for an effect like that, there aren't many options. Especially considering the card backs aren't typical bike cards.
There ARE workarounds for this - Myself, I just print my own cards. Some people don't have the capabilities or desire to do that, but I find it to be highly effective.
I make my own back colors, faces - everything. So this helps me.
If you're looking for a quicker solution - you might try this site:
http://www.cards4magic.co.uk/acatalog/Bicycle_Fake_Decks_and_Cards.html
Notice the first few choices there - This site offers adhesive vinyl backs in assorted colors for Bike decks. For an effect like Queens out of Control, you'll need to collect a bunch of the Queen cards.
I don't know about the quality of these. The vinyl may make the cards more difficult to handle, but don't quote me on that.
Aside from making your own or buying those adhesive sheets, I don't see many other options for replenishing your supplies, outside of buying the effect again.
You could try going to magicmakersinc.com - they produce the effect. Perhaps you could contact them for purchasing replacement cards.
I know how big a problem this is. Being a fan of packet effects, I found myself constantly replenshing my "stock". That's why I have decided to make my own cards - cuts down on costs. Hope this helps.