An advice for those who are trying to compete monopolizers: you cannot beat them by selling for less if they follow right steps. You should do opposite: sell for more. Because market will come down if the price goes unreasonably high. You can set a bid on item for the price it should cost and buy out price for higher than a monopolizer is selling. So, common buyer may get an item for the right price or monopolizer has to buy the item at his loss.
Since WoW Classic server has been announced at Blizzcon 2017, there is not much info about the server revealed. It is known that the upcoming expansion Battle for Azeroth pre-order has been available at blizzard shop, and the system requirements of Mac and Windows has been unveiled Recently, Forbes has an interview with J. Allen Brack and Jeremy Feasel about the project and some of the vision that developers have.
As you level, you will buy new ranks of spells. If you splurge out on an item upgrade, you will not have enough gold readily available to upgrade to the latest ranks of spells: placing you behind. Moreover, you can buy gear upgrades from the Auction House (AH) or vendors. Furthermore, you may have large investments that need to be paid for professors. You will need to purchase reagents and items such as leather, bolts of cloth, alchemy supplies – unless you have a charitable friend or another high-level alt.