I'm sure you want to buy an epic mount. If it is really hard for you to farm WoW Classic Gold, you can buy it online. But you must choose a trustworthy site. For my own experience, https://www.mmowts.com/wow-classic-gold is a very good site because I had no problem with the transactions during the past years. If you are worried about the risks, I'd like to tell you the site is 100% safe.