It's not that great of a deal imo.
PCPartPicker part list:
https://pcpartpicker.com/list/gvX9qk
Price breakdown by merchant:
https://pcpartpicker.com/list/gvX9qk/by_merchant/
CPU: Intel - Pentium G4600 3.6GHz Dual-Core Processor ($87.47 @ Newegg)
Motherboard: Asus - H110M-A/M.2 Micro ATX LGA1151 Motherboard ($31.98 @ Newegg)
Memory: Crucial - 8GB (1 x 8GB) DDR4-2400 Memory ($83.89 @ OutletPC)
Storage: Western Digital - Caviar Blue 1TB 3.5" 7200RPM Internal Hard Drive ($46.55 @ OutletPC)
Case: Deepcool - TESSERACT SW ATX Mid Tower Case ($36.99 @ SuperBiiz)
Power Supply: Corsair - CXM 550W 80+ Bronze Certified Semi-Modular ATX Power Supply ($39.99 @ Newegg)
Total: $326.87
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2018-01-20 19:28 EST-0500
I went with a slower processor, but you're not going to notice 0.1ghz. If you want to go used, an i5-3470(4/4 3.6ghz) is going to be really close. You can pick up a full tower Dell with an i5-3470 for $150.
Skylake and Kaby Lake are a dead end as well imo unless you plan on upgrading to an i5. If you want to go with an i7 later, the 6700 and 7700's are holding firm at $250 in the used market. For that price, you can pick up an i5-8400 (6/6 4.0ghz) for $185 and spend the rest on a board. i3's are pointless for Skylake and Kaby Lake.