Link for Ryzen 5 5600: https://www.ebay.com.au/itm/402542770373?var=673533661908
It is the non-X Ryzen 5 5600 (SKU number is 100-100000927BOX, so it's the retail box version which has the wraith stealth cooler), only difference is 0.2GHz lower base and boost clock compared to the X variant (3.5/4.4 vs 3.7/4.6), it is not expected to notice the performance difference in real world usage.
Link for Ryzen 7 5700X — Only 9 units available: https://www.ebay.com.au/itm/402542770373?var=673533661909
SKU is 100-100000926WOF, and note the 5700X does not come with any cooler, just like the other X variants of Ryzen 7 and above line up for 5000 series.
The 5700X is also not too much different to 5800X, with 0.4GHz lower base clock, and 0.1GHz lower boost clock (3.4/4.6 vs 3.8/4.7). 5700X is rated at 65W instead of 105W for TDP, although I'm not sure whether the lower base clock is the cause of the lower TDP, or to fit a lower TDP of 65W, the base clock was intentionally lowered. Nonetheless, general usage wise the two CPUs would be considered to be virtually identical. Although for sustained full workload, the higher TDP rating of 5800X gives it a higher power usage allowance so higher speed, so probably ~10% higher performance. But of course, if you overclock, then these can all go out the window, and both CPUs can probably be treated as the same.
Bit of an OzCurrentMarketPrice post, as they are not much different from the street price of $285 for the 5600 and the street price of $429 for the 5700X, but it does give you free shipping and no surcharge with using CC or Paypal. So, good if you really want an upgrade on the AM4 platform and don't want to wait any longer?
Don't really expect the prices will fluctuate or go down too much in the next month, unless if Shopping Express is going to do a 10% off again soon (although I doubt as I guess the discount was to get rid of excess Ryzen X SKUs before these parts come to market), or until when Computer Alliance list these parts on eBay and when another CA eBay deal comes along.
We're late-gen for the Ryzen 5000 series, so I'd imagine prices will drop again soon, including the new models.
These new variants represent an easy way to cheaply bin the Zen 3 chiplet run-offs from EPYC production lines.