Sorry to double post, if you do go down this road its important to know what you want the end result to sound like. There are different kinds of soundhole PU, magnetic PU's wont work too well with brass strings , you might fight to get a full sound , a PU with internal mic gets around this but I would assume the quality would be questionable and you get what you pay for, then some PU's work by vibrations from the strings and guitar body like the bar PU's under an electro accoustics bridge, so you have options and you will need to do some research on each type to know what will suit your needs, expectations and budget.
Pickups can be a rabbit hole , there are many different types and everyone has a different opinion on them based on their own experiences and needs, I think a lot will agree though that most cheap PU's wont sound anything like more upmarket ones , above this you then move up into exotic, hand wound , blessed by the great god of all things superb type PU's.
It can be quite overwhelming so its important to know what sound you want to achieve then read reviews, watch youtube vids etc.
Have you thought about amplification?
I can recommend this forum for guitar needs, there are some very experienced people on there and people with first hand experience of different PU's.
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