No really! You'd be suprised, I went into one locally about them reproducing a toughned glass curved sided shelf with holes through for cable management the same as the Optimum Prestige stand that I have and they were more than happy to guote so regular rectangular tinted shouldn't be a problem.
Yep I had a couple made by a glass shop, I simply supplied a plan with measurements of sides and hole positions, and 2 days later had some perfect glass shelves, shame I dropped one and chipped it on the way home though !