I ask because most people looking in this price-range tend to under-spend on the grinder. In this range, the grinder should cost nearly as much as the machine

I ask because most people looking in this price-range tend to under-spend on the grinder. In this range, the grinder should cost nearly as much as the machine to achieve good output. At the volume and price you want, the Silvia is likely the best choice. You don't get great precision/consistency, but with some practice you will get great shots, and it will last a long time. It should be paired with a grinder like the Rocky at the very least.