Lugs - I've seen guys try to sell them used in that & better condition for $5-8 ea., but $10 is pushing it cuz you can get nice chromed repros with proper acorn head & threadless lag like these, & you can still get them brand spanking new from Porsche for $21 ea. - $16+/- right now the the PCA 20% off until 3/31.
Caps - AA lists them as available, but those may be repro or NLA, since the dealers don't have then now, but there are a variety of aftermarket choices at the usual sources.
Check on TheSamba, PP, AA, etc. - & look at both repro new lugs' prices & look at the new plain billet or stamped caps out there new & crisp - & bet 50% or less than that for these, since they're not in great shape except for an average DD - same with the Lugs, which are okay but not great condition.
For me & many out there with nice 914s & nice wheels, they'd prefer to put on OE/NOS or nice aftermarket lugs & caps, whereas these appeal to the budget 914 DD crowd with alloy wheels.
All is IMHO, but hope it helps!