I just took a cruise through the bad NL teams and found a fair amount of hitters that will likely be traded at the deadline to contending teams for varying prices.
Ben Gamel, Tommy Pham, Brandon Drury, Tyler Naquin, David Peralta, Nelson Cruz, Josh Bell, Jose Iglesias, Wilsson Contreras, maybe Ian Happ, maybe Charlie Blackmon, maybe CJ Cron, maybe Jordan Luplow, maybe Christian Walker, maybe Bryan Reynolds, maybe Colin Moran.
That's just from a handful of NL teams that are definitely not trying to compete. And there's always a chance of bigger moves for guys with multiple years of team control like a Juan Soto or Ketel Marte. There's a fair amount of good players to get split among the good teams. Also good teams with a surplus may trade an extra outfielder or something to add to a position of weakness elsewhere. Point being, I don't see the Brewers having any issue adding at the deadline and I don't expect cost to be prohibitively expensive.