What is the opposite of "upsell"?

I have in fact encountered the word downsell, in colloquial and semi-formal contexts: insurance salesmen and financial advisors use it in discussing the need to dissuade clients from purchasing financial products with attractive "features" but dubious benefits.

He was convinced that the universal policy would guarantee his retirement, and it took a lot of downselling to show him he could accomplish the same thing with a convertible term policy that fit his current budget without the risk.

Upselling is deprecated by sophisticated salespeople in the insurance industry, because it's typically a one-off sale, with a greater risk of lapse. Downselling leads to longer-sustained relationships, which are ultimately more remunerative for both the agent and, they believe (or at least maintain), the client.