Ok? I chose to build sometbing custom fit to my space, and the rack mounting strip things were <£10 on eBay. Obviously the wood brings it more to '<$100' realm,

Ok? I chose to build sometbing custom fit to my space, and the rack mounting strip things were <£10 on eBay. Obviously the wood brings it more to '<$100' realm, but I was also just building a shelving unit. My point wasn't really cost anyway, I didn't mention it, my point was just that 'rack' doesn't have to mean floor standing 4-sided 42U behemoth from a supplier surprised to be delivering to a residential address, on which point we're agreeing.