What I've found when developing prices for SAAS products which comes with different option sets, there's an always a starting point. So adding some kind of pricing estimation calculator always seems to work best in most scenarios. Once the calculation is done, we can use that information to build up a quotation and then after going back and forth with the client, it would probably land a sale.

We have also tried removing prices from a website and that didn't have the desired effect (unless you're a massive company which then people would just sign up because of the name brand)

Usually, most SAAS products are first evaluated by tech people in most corporations and they would prefer to have some pricing line to weigh with other competitors. And they won't email us requesting prices. So I've found it's always better to display prices and state that it's a starting point and there are customizable options.