HighMark Auctions is a Denver, Colorado online auction company. We offer buying for those bargain shoppers interested in getting great deals, selling for those looking to earn some extra cash and clean out their garage, online estate sales for those who recently lost a loved one or are moving across county and need to get rid of the majority of their belongings. We also offer online consignment. Online auctions allow your items to be seen by hundreds and thousands of people instead of just a few if you were to have a garage sale or list it in a newspaper. Contact us today to get started! It's quick, easy and requires minimal work on your end.