ComaWell

The thing about an FX-8350 is that it's not as simple as "higher clock speeds are better." The micro-architecture of the CPU tends to be more directly related to how powerful and efficient it can be than just how high it's clocked. The FX-8350 was released over 6 years ago, and it was infamous for running very hot, consuming a lot of power, and, most importantly, not being a great value. Don't get me wrong, it's not necessarily a bad processor, especially considering the fact that a brand new one is only $70 today, but there are a TON of compromises you're making by choosing it over something newer. No DDR4 Ram, no upgradability whatsoever (the FX-9590 has a TDP of 220W and would not run on the motherboard you picked or any new motherboard that's worth it's cost now,) SATA at only 3G which would cut the transfer speed of any modern SATA SSD you could get by as much as half, no M.2 if you ever decided down the line that you wanted faster storage, and I have never owned an FX-8350 so I'm not too familiar with it's thermal needs but at a TDP of 125W and a thermal limit of I believe 75C, you're likely going to have to overspend on cooling in order to keep it running without thermal throttling (though to be fair I don't know this for sure.) If you are on a very tight budget and you want to buy new, you can get better gaming performance at a similar cost with a Ryzen 3 2200G and eliminate all of those compromises (though if you can afford the extra cost I agree with the others that a 2400G or 2600 would be a good choice.) Otherwise, if you don't mind the old tech limitations and you're ok with buying used, you can get really good deals on old pre-built systems from HP and Dell and easily get 2nd or 3rd gen i5-i7 CPU's with the motherboard, ram, and case (if you don't care about case aesthetics) already included for a similar price to a 2400G alone. All you'd have to do is slap in an SSD and probably a better HDD, get a less sketchy power supply, throw in a graphics card, and it would kick the crap out of an 8350. But regardless of what you do, there are many better options than an 8350.

I think he meant the region you're selling in, not the website (for example in a place like L.A. the market for used parts has generally much higher costs than most other regions in the US). In my opinion though, $850 is still way too high. Some of the parts in this PC are mismatched, for example the Motherboard, HDD, and PSU are overkill for this price point, whereas the graphics card is lower end than I would expect if I were buying this as a gaming computer. I also wouldn't recommend including the RGB fans, considering many buyers would probably not be interested for paying extra for almost purely aesthetic inclusions they may not want. For ~$850 I could buy brand new parts for a gaming computer that performs significantly better than this, including the specified case:
PCPartPicker part list / Price breakdown by merchant Type Item Price CPU AMD - Ryzen 7 1700 3 GHz 8-Core Processor $168.89 @ OutletPC CPU Cooler Cooler Master - Hyper 212 EVO 82.9 CFM Sleeve Bearing CPU Cooler $27.89 @ OutletPC Motherboard MSI - B350M PRO-VD PLUS Micro ATX AM4 Motherboard $69.99 @ B&H Memory Corsair - Vengeance LPX 16 GB (2 x 8 GB) DDR4-3000 Memory $104.99 @ Newegg Business Storage Samsung - 860 Evo 250 GB 2.5" Solid State Drive $57.99 @ B&H Storage Western Digital - Caviar Black 2 TB 3.5" 7200RPM Internal Hard Drive $106.00 @ Amazon Video Card Gigabyte - Radeon RX 580 8 GB Gaming 8G Video Card $179.99 @ Newegg Case Rosewill - CULLINAN ATX Mid Tower Case $79.99 @ Newegg Business Power Supply Corsair - RMx (2018) 650 W 80+ Gold Certified Fully-Modular ATX Power Supply $69.99 @ Newegg   Prices include shipping, taxes, rebates, and discounts     Total (before mail-in rebates) $915.72   Mail-in rebates -$50.00   Total $865.72   Generated by PCPartPicker 2019-02-03 00:54 EST-0500   In all honesty I don't think you're going to get much for this build, if for no other reason than the core audience you'd be selling this to (gamers) simply won't have an inherent need for, and won't be willing to pay extra for, the higher end parts of this build when the core performance pieces they're buying, the CPU and GPU, are way underpowered for the cost. If you're planning on making a new computer I would just keep the RAM, HDD, PSU, and case (if you like it) for the next build as they're all still very competent parts. The rest I would just sell as individual parts