I bought mine in April last year, so the ebay details aren’t available any more, and I can’t remember the exact weight I’m afraid, but it was certainly respectable.
I didn’t want to go BB30 so went with a BSA BB, but other options were available.
I don’t think that it’s a direct copy of anything specific, although I may be wrong, a lot of these bikes take inspiration from lots of brands, but all I can say is I like it and it was a bargain!
My UK riding buddy is a very good DHer, and normall whips me on the twisty stuff and descents, while I kill him on the ups. First ride on this bike and I schooled him everywhere 😀
Cheers, Rich