Looking for a cheap rainbow/primary colors collection?

I have some colors that are quite sheer on their own and after a trip to the drug store to look at Sally Hansen cheapies to put underneath them.. do people like Sally Hansen or LA Colors do collections? That you can purchase all at once? I checked the Sally Hansen site and kind of got overwhelmed and I think it's a no.

I considered some weird Amazon no name kit but I'm afraid it'll be the worst polish ever so I'm hesitant to bite the bullet.

This message brought to you mostly by my recently purchased Mishipeshu from LynB. The most gorgeous blurple glowy goodness a la Ghosts & Ghoulies, but even after 3 coats I could see my nail line and my nail line is.. ew. I don't really fuck with jellies for this exact reason 😅😭

For now I snagged Mind Blending by Sally Hansen even tho I think it's a bit too bright.. but two coats of mishi should be fine? Right?