Ive been looking around recently and google search had nothing bad about the blackworks lca's. From what i read last night theyre made in the same factory as blox, and others.... But other then that its all up to you as others have said GL.
eBay doesn't make parts. So you can still find nice quality brand named parts for low prices. For example a skunk2 lca bought off eBay would be the exact same as th skunk2 lca off pwjdm or any other site.
Trust me when I tell you it is all kinds of worth it to be patient and buy quality parts. They fit better, last longer, and you're a lot happier with your car knowing that you got the best product you could. Honestly I don't know why you'd flush $200-400 down the toilet to make the subframe of the car shiny. I mean, LCAs and a subframe brace both are designed to serve a legitimate function and you're skipping.
I'm a broke college kid too, takes me 6 months/1 year t save up for the things I want to buy. But when I do buy them I get volks, Function7, Recaros, etc. You'll be a lot happier with the car, trust me. I was so happy sitting in a set of REAL recaros. And I get compliments on my wheels all the time.
Plus I can tell people how badass volks are because they don't chip/flake like my rotas or my konigs did. And the 16x7" wheel only weighs 11.1lbs. Absolutely absurd.