You might take a look at Frog Pond Drafts in Ohio. They are a rescue, who does a fabulous job. It would be well worth your time for sure. They are also on Facebook, if you are so inclined. They almoost always have a Belgian or two.
I would concur with all said above. I go to auctions too, mostly just to watch, would not buy at one, as I do not have the confidencce in my assessment skills, nor do I have unlimited funds to deal with some of the issues, let alone a place to quarantine for 30 days. Shoot-I even scrub my boots and change clothes before I go to my own barns!