Hi Amber,
Where are you located, and can you be a little clearer on what exactly you are looking for? I know of a breeder in northern California with a couple of Trakehner cross babies in that price range. I also have some connections in Europe & Mexico which I am happy to share with you. I sat on several at Thermal last week that meet your specs below.
“4-8yo prospect for the hunter ring. can be green, need show miles, need lead change smoothed out, etc. for a pretty good budget (mid-low fives)”
If your budget is low fives ($25,000 USD and under) I do not think it makes sense to import from Europe. Mexico or Canada are safer options financially. If your budget is $50,000 USD, then Europe makes sense as long as you have a good contact (and realize that Europeans know exactly what the American hunter market is looking for, and they upcharge accordingly).
Good luck! Happy to chat more on the phone or here.