Skiing gear (especially clothing) is very fashionable, so you can pay a fortune for the latest styles or look horribly out of fashion on the slopes.
If that doesn't bother you, then quality second-hand clothes are fine.
Gloves? Well, you can spend a couple of hundred, but you can get acceptable ones from Decathlon for £20 and, unless you're venturing to Canada in January, they'll be plenty warm enough. (ETA just noticed you're in Scotland, if you're skiing there I believe it can get quite chilly - Some people say mittens are better for really cold weather, but you lose some dexterity, obviously).
The same applies to jackets, trousers, hats, etc.
A decent pair of sunglasses is a must and some, not too tinted, goggles are a good idea for skiing in falling snow.
Most people wear helmets these days and, like everything else, you can buy crazily expensive ones and cheap basic ones - There are different standards of protection, but they don't always relate to the price you pay.
I've been skiing for 38 years and am hoping to go this winter after a couple of missed years due to COVID and other plans.
M