Looks like a really good price for the budget conscious builds, a last mile upgrade if you have a b450 board, or anyone waiting on GPU prices to fall (lol)
Based on my google skills, this CPU isn't quite as fast as the 5600X, but is definitely a step up from a 3600 - so not a terrible unit.
If you're looking for an Octa core CPU, they have the Ryzen 7 5700G for $437.48
note that if all you want from an cpu upgrade is for gaming, which I assume most people would be, 5600g is not a worthwhile upgrade from 3600, you will see minimal, single digits of fps gains.
For starters, both 5600g and 5700g are just unlocked mobile 5600H and 5800H chips. The 'problem' with this generation (and the 6000 series as well) of ryzen mobile chips is that AMD only gave them 16MB of L3 cache which greatly affected gaming performance. Don't get me wrong, they are very good CPUs by themselves in all other aspects, but just let down by the smaller cache - for comparison, the intel 11th gen mobile equiv of 5600H/5800H have 18MB(11600h)/24MB(11800H) L3 cache respectively, and the desktop 3600/5600x both have 32MB of L3 cache.