I am pretty much convinced that this approach is both appropriate and does no damage.
1. If they are on annual agreement, Call them to here what they want to do, why, and why now? Verbally outline the several options they could look at. Tell them that anything more than this is a modest consulting engagement. Tell them you'll send 3 options for this. If not on annual agreement, I wouldn't give them much verbal help even.
2. The options, in a 90% boilerplate 1-page outline. range from
1) defining for them realistic options and functionality they need to look for or avoid, etc. links to appropriate solutions, range of budget.
2) Option (1) + review with company + final 2 or 3 options to consider w/budget range. Customer then goes off with vendors on their own.
3) Option (2) + management of and guidance through the demo and selection process. Perhaps also proj mgt fee (~15%) of selected project so you stay through it.
3. If they want to just do DIY, they are welcome to it.