$120 for a used prism swap sounds like a steal compared to what a full teardown would've cost. Gotta love when the "dust" turns out to be a fracture that moved every time you tilted the camera, like it was messing with you on purpose. I once spent half an hour scrubbing a "smudge" off a Pentax screen that turned out to be a scratch catching the light at one angle. Lesson learned: if the spot changes when you rotate the body, stop cleaning and start looking somewhere else.

Man, that's a real tradeoff, giving up your whole Saturday to save almost $300 is no small thing and I get why you'd wonder if it's worth it. We did the two store thing for a while and honestly the driving and the extra stops wore me down more than I expected.

Two months of wrestling with a floppy bike sounds miserable, and I bet that $40 stand seemed fine right up until the first time your derailleur kissed the garage floor. The PCS-10.2 stings at checkout but it holds the bike steady so you can actually work on it with both hands. Mine has survived years of chain cleaning and bottom bracket jobs without ever tipping. You will forget the price long before you forget the wobble.