Do you have any recommendations of a particular model of a quality dehumidifier? Thanks in advance.
As to non-dyi, it'll vary drastically given your geography, urban vs rural, contractor honesty, etc.
Ideally you've friends/acquaintances who've had similar work done and can recommend someone.
Failing that, there's really no quick/easy substitute for having guys in to estimate the job, comparing quotes, then rolling the dice.
The $3K you mentioned earlier is probably barkpark-ish, but it wouldn't surprise me in the least if you're quoted much more than that, esp. if you're urban.
Regardless, good luck with it.