vision "insurance" isn't for reducing risk, it's actually a vehicle for delivering tax-free compensation by employers. since you're not paying income tax on the benefits, you're saving at least the marginal tax rate (~35% depending on the state). IANAL, but the arrangement might also cause no sales tax to be collected. also, your employer who's buying in bulk presumably gets a % discount over whatever rate the blog's quoting. in the end, i would be surprised if there wasn't a net savings.