Parts price guide subscription

[colorado]

I was wondering if any of ya'll use a subscription service for material pricing in the plumbing service industry. If so, what service have you had good sucess with? I would possibily be interested for pricing in the southern US. Central Texas in particular. I am interested in a price book we would be able to carry on our service vehicles rather than a service where we would have to down load, print from a CD or whatever to make up our own catatlog. I am currently doing something like that now. Thanks, Colorado