I think in 1998 I bought White and Blue G3 350 desktop (El Capitan) for that money. With small hardware additions (GPU, IDE card, etc) it worked until 2006.
Great investment it was and it also worked OS X and OS 9 as well. I very much like the idea of Studio, with my current Mac Mini M1 I don't need it now, but its great to have a flagship desktop now (even if it is not Mac Pro).