If youre in the market for coilovers, I will have my B&G's up for sale shortly.
As far as the RS you posted above, you can pick up a set that needs refinishing for anywhere from 700-1400 in 17". An 18" RS is a unicorn, however 18" Super RS are not and can be had in "ok" condition for the area of 2300.
By the time you refinish/build/paint/polish a set of RS you can buy a set already done for much less.
For instance:
Redrilled, powdercoated, new lips, new hex caps and centers and ready to go
VWvortex Forums: FS: BBS RS's (Long Island, NY)
WAYYYY fresh. IMO the wires are a bold move, but whatever tickles yer pickle man.