Meters can be as complicated with gizmos and gagets, digital vs analog, built in spot and attachment spot some have flash features adn others read color balance as well. The prices range from $30 to $1500, used as well as new.
I have a 35 year old Gosen Luna Pro with a "vari angle 5°/15°" spot attachment that I had since new that is still as accurate as the day I bought it and I don't use the special battery adapter either since mercury batteries aren't made anymore. I did make a modification to the dial so I can do Zone System calculations for developement adjustments. It can be found at
KEH used for about $80 and maybe another $30 for the spot attachemnt.
I also have a digital Minolta IIIF Autometer ambiant/flash metering as well as many attachments available for it including spot and fiber optic metering. It measures in 1/10 stops and is fairly sensative in low light. I paid $85 for this 20 year old meter.
I compared both meters and they are only 1/2 stop off from eachother... but that isn't the best part yet. I actually prefer the analog meter because it has the dial I modified for the zone system as well as being able to see all my possable combinations where a digital dosen't show that, you have to step up or down to each stop or speed. Zone system on the digital will become a thought process where it was once a twist of the dial.
The flash metering is cool. I hardly ever use a flash but this meter will make that a no brainer if you are using a manual flash or studio flashes like my 40 year old Balcars which are manually adjusted for power range.
Now you have to ask yourself what type of photography are you intending to use the meter for? Are you mainly shooting color and need CC correction for color balance? Manual flash? Zone system? Averaging? Reflectance?
What is your budget and how soon will you need it?