Sharp VCRs are well-regarded in USA as playback decks to make digital transfers. Used Sharps are very reasonably priced, have better than average picture quality for budget models, and better than average tracking of hifi audio as well as video.
But like any other brand, heavy heavy use will wear a Sharp down and degrade its performance. Remember, many of these VCRs are 20+ years old now: it is unrealistic to think they will be found in "like new" condition forever. In North America, Panasonic-made VCRs outsold every other brand 2:1, so by sheer numbers sold there are many more Panasonics available in pristine condition than other brands. Those who want a nice Sharp will need to search longer and harder than they would for a more common Panasonic or JVC.
North Americans abandoned VCRs very quickly once DVD players became affordable in 1999: this also improves the chances of finding lightly-used vcrs here. Other countries like Brazil did not change to dvd as quickly, so their VCRs were more heavily used and it is harder to find a nice one today.