Hi, I am new here, but not that new to goats. We have a small hobby herd of goats and no stock trailer. Back when we started I bought a very used cargo trailer off of Craigslist for $600. I used a circle cutting drill bit and put in those butterfly vents that are seen in older stock trailers. I put a rubber mat on the floor that I can pull out to clean. Bonus, it is light enough to move around the barn by hand. I can haul 5 or 6 adult full size goats or 10+ kids easily. Great on the budget.