It's practically the raison d'etre for third party subscription agents that already exist, although their business model revolves around actually handling the purchasing part and charging a fee for it.
I guess your alternative: flat rate access to a well structured general price list of software, data services and biz intel products would have some value to some BigCorp purchasing specialists, but would it cover the costs of putting it together?
It's also pretty easily ignored at the high end of the market where salespeople won't quote anybody without a proper telephone conversation and/or valid company email, and will claim every package is highly customised (even if it isn't). Even at the low end it's easily dismissed as "out of date", "inaccurate" or "for a different service we've discontinued"... and believe me I've had that conversation plenty of times about third party guesstimates of product prices when those excuses were actually true
It's also pretty easily ignored at the high end of the market where salespeople won't quote anybody without a proper telephone conversation and/or valid company email, and will claim every package is highly customised (even if it isn't). Even at the low end it's easily dismissed as "out of date", "inaccurate" or "for a different service we've discontinued"... and believe me I've had that conversation plenty of times about third party guesstimates of product prices when those excuses were actually true