It helps knowing your usage model, having a performance test plan that includes requirements or projections from the applications to be tested, as well as design details of the test environment. It is more cost-effective buying all your projected licenses up front, as opposed to buying a small number each year to meet your needs.

The pricing is fine, and it's good for long periods.

It's too costly.

The pricing is similar to Load Runner but the package for virtual user licencing is different. I would recommend this tool for small businesses with only web applications for performance testing.

Now, the price slightly expensive especially if you are in small-medium company, but if you are in a medium-high company, and need the powerful tools with IBM great name, just use it. It would be better if IBM release the 'cheapest' version for the small-medium company.

It is much cheaper than Micro Focus LoadRunner. We need perpetual licenses. 

Support is included in the first sale. After that, you need to renew support every year.

IBM separately licenses tool and concurrent users (threads), but for this tool, IBM offers the renting of licenses over SaaS programs. Customers can rent licenses for a fixed time (minimum is one month) and use licenses during a projects duration. Licenses over SaaS are much cheaper and the customer gets IBM support.

It's one of the most cost-effective products on the market.

This is not the most expensive tool in the market place, but of course, it is not open source.

The cloud load generation option could be a solution for companies not able or willing to invest in an enterprise performance test solution.

I would consider their token licensing option if you are looking into other testing and or development tools since you can optimize license usage by re-using licensees across the Rational tool set.