I have
ME Goretex pro jacket - it’s the bees knees for me. I didn’t pay anywhere near that for it, think it was around £350 but that’s at least 8 years ago.
trekkit usually have them on sale as well so worth keeping an eye out for them.
If you don’t require the pro verison they do other version with not as main features - like this
one
The main difference is -
Gore-Tex uses Polyurethane as the inner lining, but Gore-Tex Pro uses a Micro-Grid backer. This snags less than Polyurethane, is lighter, and allows water vapour to escape more easily. In addition, Gore-Tex Pro only uses the hardest materials for its outer 'face' layer.
The other features that may be key are fully waterproof zips at the breast pocket and side pockets.
I always have my pit zips slightly open and I never sweat in it or feel super warm. I tend to wear a 100 fleece it and it’s fine for me.