Shame the bode is optional
Agreed. Seems to me, given the current non-discounted retail prices of the various RTB200X configurations without K36, R&S would be wise to authorize the sales agents to use K36 as a "deal sweetener" if needed when preparing RTB200X quotes. Something to throw in "free" if the customer is insisting on a 10% or so markdown to do the deal.
Or, alternatively, if R&S would just have (often) recurring "sales" where the K36 was included with some RTB200X configurations for some period of time.
Seems to me whatever R&S would loose in direct profit on the K36 itself would easily be made up - and exceeded - in simply (many) more RTB200X sales due to the "K36 bundle specials". They could always add a restriction that the K36 special didn't apply to quantity sales (an entire school lab stocking up), etc.