The product is expensive and has a perpetual license.

Listen to the customers and you should not be vendor-specific or vendor-biased(not uncommon with silos and vendor loyalties and camps) when making decisions. You should capture your requirements correctly and be clear about the financial cost, which includes upfront licensing and maintenance, over a span of the first three years. If you are clear about the top requirements that are absolutely necessary, then a year or two down the line, it is less painful to go and revisit those decisions and make amends.

Pricing is not a problem for CMOD; it's pretty reasonable.

Reach out to local IBM partners.