KansasMom wrote in post #2182932
it's up to 899 in the folder images when shooting in RAW
If that is folder 899, it's done about 80,000 shots so is about ready for a shutter failure. Folders start at 100, so it's filled 799 folders with 100 images in each. RAW doesn't matter, it's 100 shots per folder, regardless of RAW, Jpeg or both.
I always understood the 20D to be good for about 100,000 shots, which is a vague average, they may last much longer or fail well before. However the new 30D claimed to have shutter life 'improved' to 100,000 - suggesting the 20D is actually less. Mine has a bit over 70,000 on it and I have recently bought a 5D to replace it, just in case of impending shutter failure, as I don't want a terminal failure at an important shoot. I still use the 20D as a second body though.
It looks like it may have been traded in because it's starting to fail. B&H probably took a few test shots, during which it didn't show the problem, so sold it straight on. If it had been properly refurbished a faulty shutter should have been replaced.
I would exercise that 14 day return if I were you.