I agree with Todd in most cases but I just purchased a 3 digit HL which was not bid on.
The two others of the same HL with high numbers #7000 were heavily bid on (1 before and one after - within 24 hours)and went for more than the opening bid on mine. I offered $25 less than the opening bid and successfully completed the transaction. Vendor had over 65 successful transactions.
So be awake and not in a rush and you might be pleasantly surprised!