By now, I'm sure everyone is familar with the Crackle craze, there have been plenty of other dupes like Crackle including the Shatter and now, I fell in love with another dupe by Avon... it's the Mosiac Effects polish.
I bought it from my Avon rep, it was on sale for $3.99 but the regular price is $6.00 ( a few dollars cheaper than crackle). You apply it the same as Crackle, you pick a base color, let it dry and apply a coat of the mosiac top coat to your nails and then watch it transform. I love watching the designs form :-) I apply a clear top coat and then I'm done.
I get gel overlays over my own nails and I took it to the shop and let the nail technician use it and this is how it came out looking. I've used it on my toe nails, but; it doesn't come out as well, it applies really thick for some reason.
If you're looking for an inexpensive version of Crackle, the Mosiac Effects is worth a shot, the only down side is that it only comes in one color, black. It can be purchased from your local Avon rep.