More like Caveat Emptor

anchored on:fantasyour worldmid 20th centuryfunnywhimsical

but

Narrow

Charlie (Roald Dahl)Series
series6 books1964
completed
About coming of age, set in contemporary.
Start with Charlie and the Chocolate Factory →
Gavagan's BarSeries
series32 books1950
completed
Fantasy, funny and whimsical in tone, set in mid 20th century and our world.
Start with Elephas Frumenti →
Flying DutchNovel
Tom Holtstandalone novel1991
Humor, about immortality, set in contemporary.
The Ogre DownstairsNovel
Diana Wynne Jonesstandalone novel1974
About coming of age and family secrets, set in contemporary and british isles.
“When a disagreeable man with two boys marries a widow with three children, family adjustments are complicated by two magic chemistry sets which cause strange things to happen around the house.”
from the catalogue
The Armitage FamilySeries
series23 books1953
completed
Set in british isles.
Start with Dragon Monday →
James and the Giant PeachNovel
Roald Dahlstandalone novel1961
Adventurous in tone, about found family and coming of age, set in contemporary.
“There have been re-illustrated versions of it over the years, drawn by Michael Simeon, Emma Chichester Clark, Lane Smith and Quentin Blake.”
from the catalogue