Any experience dealing with Siltech cables sold from Japan?

I'd be very leery of buying pre-owned well known expensive cables from Asia counterfeits are very thick on the ground there. And the usual advice if the deal seems to good to be true it likely is.

One can save buying used, but there are a LOT of counterfeit cables that’s often not easy to distinguish from genuine.

It helps to bolster confidence if the seller has the original purchase receipt, or the box/packaging it came with, or the seller has a great reputation.

Shortly after the product launch, I purchased Siltech Classic Legend for its highly regarded reviewed performance at a relatively affordable price point.  Seemed high enough performance and safer than to try to buy Siltech used.  

The prices are a giveaway. No way Siltech's go for such low prices. Also, there are a few sellers who repeatedly try and sell knock-offs. Check their usernames and all their products over the course of a week and you will see the scammers.

Stick to Agon and USAM and WBF.