DTUK CRD-T+ tuning box. used. bought 2014 for £315.95 by a friend. in 11.2019 I had it sent to DTUK for a software update which cost £75. I had it on a 2008 Skoda Superb with the manual 2.0 CR 170hp engine. sold the car 1 year after installation and it's sat in my shed since. got the receipts for purchase and software update. there is no damage to wires but a bit of minor abrasion or heat related damage to the wire housing/plugs, not effecting the working of the product.
I sold this once and the buyer returned it because he didn't get round to installation which was annoying. so I'll accept returns if you send a video of it actually not working, all connected, but no returns if you haven't actually bothered to install it!! I know it works and was great on my Skoda superb.