forbidden fruit is the sweetest
sour grapes
unessentials
half a loaf is better than none
last thing one needs
rare
impracticality
unsalable
envy
unsaleable
esoterica
desirable
forbidden fruit
fact of life
unavoidable
beggars can't be choosers
indispensable
diswant
subhuman
settle for
siren call
misendow
siren song
no-no
underprivileged
nonrule
value statement
con
bound to
road less traveled
desublimate
rejectamenta
amenity
ruin
constraint
underivable
the grass is always greener on the other side
too much of a good thing
nonsustainability
flog a dead pony
downside
ask for the moon
no go
avoidable
poor
luxury
flog a dead horse
nonluxury
brass farthing
pruck
unpreventable
unwishable
unobservable
nonnegotiable
nonnaturality
nonnaturalness
scarcity
Heath Robinson
too hard basket
silliness
the grapes are sour anyway
nescient
rarefied
wooden nickel
resignation
end in itself
clart
pearls before swine
odds and sods
must not
desirabilia
distress purchase
incapacitate
scrag end
lose
package deal
out of one's element
ratfuck
disprefer
famine food
noncomestible
deniability
Heath Robinsonesque
rife
go down like a lead zeppelin
nonconsumer
blood from a stone
nonnature
go down like a lead balloon
trashery
go over like a lead zeppelin
antivolition
unfavorite
unpopularly
whatever
kiss of death
you can't unring a bell
scarceness
unluxurious
illusion