Thanks for the pics, the components look near enough identical.
Now, the 200 has the kind of hardware that could be reasonably be priced as per the 100. The 100 is way too simple a device for the money. Thick metal base plate or not.
There is no doubt that the Reavon UBR-X100 is "based" on GIEC BDP-G5300 with a "nicer" shell.
Wowza... Over in this Malaysia store, the 'standard' model is being sold at 3,350.00 ringgit (RM), which is currently around £600.00. And the 'pro' model is being sold at RM6,350.00, which is around £1,130.00. All plus shipping and taxes.