As others have said the price does matter but there are two products I would definitely consider rebuying at a higher premium because I think they're that great:

Armani, Eyes to Kill. Shade: Khaki Pulse.

• I've had a lot of makeup over the years and this is the only one I would ever consider an HG. Don't get me wrong, I have a lot of As but this is the only one I think is entirely perfect in my eyes. I can wear this almost sheer and it has a beautifully complex satin finish. I can add a bit more and it's a dirt metallic sheen. I can wet and get an almost foil finish. The color is never flat. I don't need primer.

by Terry, chartreuse eyeshadow from Magnet Eyes palette.

• This palette itself is pricey. Believe me, I went back and forth on the splurge for over a year and even then I refused to pay full price. Unique and well thought out palette but it's that one shade that I would pay a good amount for. It was made for me. Formula wise, if you think the by Terry hydra powder is great...this is it in eyeshadow form I think. Builds beautifully, has a satin glow to it, but has no shimmer. Makes my eyelids look better, who even knew that was something to look for or notice!? It requires primer and still I'd do it.