'Cheap thrill' and 'simple pleasure' are another one of those pairs where if you look at just the individual elements, they look like they COULD be roughly synonyms, but they're not at all that close in use, because of the connotations.
A lot of dictionaries define 'cheap thrill' as something like 'an inexpensive/minor source of excitement' but that misses out the fact that 'cheap' here has disparaging connotations, and usually when people use it they're being either dismissive or shamefaced about the thrill in question. It's often used about something titillating, a bit scandalous, or slightly taboo. I think it would be more accurate to gloss 'cheap' here as its 'low in value' meaning, not its more common 'low in cost' one.
But on the other hand 'simple pleasure' is overwhelmingly used for things that could be described, if you were so inclined, as 'wholesome'. Generally it encompasses things that bring enjoyment but are not disparged or taboo. I also have a feeling that 'simple pleasure' is more likely to be used for things that make you feel peaceful or quietly happy, while 'cheap thrill' is for things that make you feel excited and keyed up.
So although the two could have been near-synonyms, in fact they're sort of near-antonyms within the same narrow dynamic. Easy to access (derogatory) excitement, vs easy to access (complimentary) joy.
I'm just doing free-range semantics bullshit for fun here so don't expect this to lead to any important conclusions. Not sure whether this classifies as a cheap thrill or a simple pleasure. For a definite cheap thrill, I do recommend finding a sentence that has 'cheap thrill' in it and a sentence that has 'simple pleasure' in it and swapping the two, see what results.












