Here's another PC I put together using mostly second hand parts. All prices listed are the prices I paid/value the components at. All prices are in AUD.
I really wanted to build an 8th gen Intel PC as well as a white themed PC, so when I saw the B360M Mortar Titanium pop up locally I knew I had to grab it, and managed to haggle the seller down to $70. I slowly bought everything else over time as they popped up on the market. Memory is not actually the kit listed, it's half of a 32gb kit @3000mhz. Everything apart from case, HDD, cooler and cables are second hand. I really wanted to make this build look good, so I splashed a bit more cash on aesthetics than I usually would - the CPU cooler for example is way overkill for the 8100 but looks amazing. I spent a couple of hours on cable management due to the 301 being a very tight enclosure, but I think it really payed off in the end. I can confidently say this is one of the most attractive PCs I've built to date.
Any questions or feedback feel free, I love hearing other people's opinions :)