I’m a sole practitioner in Pittsburgh. I use Revit, Sketchup, Lumion, Architectural Desktop, and a bunch of other smaller programs. I ended up buying my own D-size plotter, just for convenience. I would constantly need to print things right before heading out to a meeting, and my local FedEx Kinkos frequently had some issue - printer down, network down etc.
I have a T120 HP 24" roll printer. I think I paid about $500 for it. I sits on two file cabinets. I can print up to arc D on it, which is fine for what I do.
Next to that I have an HP 7740 Wide format, that prints and scans 11x17. It’s only shortcoming is that the automatic document feeder only does letter/legal. It would be ideal if the ADF also did 11x17. I have to scan 11x17’s one sheet at a time.
I built my own desktop PC, but the specs aren’t outrageous. Ryzen 1700X, 32GB Ram (I started with 16GB and it was fine), GTX 1070, 512GB SSD. I think I was about $1000 all said and done. If I were to buy a system from a retailer, I’ve always had good luck with the Dell outlet. I’m sure you could fine a system from Dell for less than $800 that would work well.