vamji -vam-va'i- gismu

x1 (ni) is the equivalent value/worth of x2 [item(s) of value] to x3 for use/appreciation x4.

Also: x2 is worth x1 to x3; (for x2 person:) x2 merits (one sense), (adjective:) x2 is worthy (= selva'i for reordered places); merit reward (= nemselva'i); receive merited reward (= vamselne'u); x2 may be a specific object, a commodity (mass), an event, or a property; pedantically, for objects/commodities, this is sumti-raising from ownership of the object/commodity (= posyva'i, posyselva'i for unambiguous semantics). (cf. jdima, jerna, vecnu, dirba, janta, kargu, pleji; see note at jdima on cost/price/value distinction, vajni)

In notes:

dirba
x1 is dear/precious/darling to x2; x1 is emotionally valued by x2.
janta
x1 is an account/bill/invoice for goods/services x2, billed to x3 by x4.
jdima
x1 [amount] is the price of x2 to purchaser/consumer x3 set by vendor x4.
jerna
x1 (agent/person) earns/[deserves/merits] wages/salary/pay x2 for work/service x3 (activity).
kargu
x1 (object/commodity/property/event) is costly/expensive/dear to x2 by standard x3.
vajni
x1 (object/event) is important/significant to x2 (person/event) in aspect/for reason x3 (nu/ka).
vecnu
x1 [seller] sells/vends x2 [goods/service/commodity] to buyer x3 for amount/cost/expense x4.
jvova'i
x1 (number) is the lujvo score of lujvo x2 (text) determined under scoring algorithm x3.
terva'i
v3 evaluates v2 (object) as v1 (quality).
vamrai
v1=t1 is the most valuable among items v2=r4 to v3 for purpose v4.