The outside micrometers I have are made by Starrett along with Brown and Sharp. The inside micrometer set is from Central Tool. These things are accurate and a bit pricy but worth it if you plan to use them on occasion.
I don’t remember what I paid for my stuff as it was purchased a long, long time ago.
I bought a cheap CEN-TECH vernier caliper from HF and compared it to measurements from some of my micrometers. It was off a couple of thousandths of an inch. I use the caliper at times on my lathe work or a few other things when utter precision is not really necessary. (spacers, bushings, etc)
If you want a higher end measuring tool you might check eBay or Craigslist but I think the HF set could be accurate enough to get by. If you go the HF route you should test them for accuracy by using a Standard. A Standard is a short length of precision stock used to verify accuracy, to make adjustments of the mike, etc.