Goggle Considerations . . .
A) Helmet fit, if you wear one. Although helmet gap seems to be only a practical threat under wind chill conditions, an incredible amount of time is spent by skiers obsessing on it. It's apparently akin to "cooties" or something. Some goggles have offsets or hinges where the strap attaches to the goggle that help with helmet fit.
B) Face Fit. I find "nostril compression" to be a factor, that is, some goggles pinch my nostrils slightly, inhibiting breathing. Others find cheek bone shape and eye socket shape important.
C) Foggability. I've concluded that ventilation is far more important than any treatment put on the lens. Certainly dual lens is a characteristic of better goggles. I have a pair of Smith Turbo's (interior vent fan) for when I wear my spec's that I dig out on the coast when it's high humidity that work incredibly well, despite their geeky little motor that whirs when I'm in the lift line and I forget to turn it off.
D) Scratch resistant coating. Some are better than others, but the best thing is a bag or case to keep them in when not in use, so your gear bag or pack doesn't beat them up. Cheap or pricey, they ain't worth a thing if the lens looks like the back window of a '59 Chevy convertible.
E) Lens color. Rose seems to be the preferred "one goggle" lens. Many of us will admit to having two sets of goggles, one low light, one bright light. If you ski in the dark, cloudy far North there are some excellent specialty lenses that give a slight advantage. I like my Oakley "high contrast" or whatever they're called a lot. They just make terrain pop when light's flat. Don't expect to make two sets of lenses work. Changing them out is a pain, then you've got the spare lenses to loose, too. It's much easier to just get a second set of goggles.
F) Breakaway Strap. A strap buckle at mid-back is handy for helmet use, but also seems to facilitate "fly away" during yard-sale type wrecks. Whatever your preference, seems to be a characteristic of higher priced goggles.
All this means you should try 'em before you buy 'em. Buy good ones if you can afford it and think you can keep them. I've worn spec's my whole life and make "glasses tracking" a habit. My wife, on the other hand, is constant proof of the rule that the more you pay for sunglasses, the sooner you loose them. Although skiing by feel has it's virtues, I prefer to do it by choice.