Does anyone know if I'm gonna get dinged for import duties on a $1000 wheelset buy from the United Kingdom? And If so, what is the percentage?

Thanks.

10%, per harmonized tariffs. it's a game of roulette, sometimes they get you and othertimes they don't

Yep, I got nailed for $80 on an $800 set earlier this year. Still much cheaper than US prices, even when you add in the duties.