I agree it's important to get a Good and reputable one rather than a cheap one.
It may not be worthwhile to get a cheap one if you discover the reading on the dial is wrong all the years and the way you found out was by looking at the fungus already growing on your lens.
Read several horror stories abt dry cabinets.
Can get a dry box now, throw in several silica gel and use as a temporary solution till you save up for a good one.
Actually if your dry box is large enough, can try putting in the "Thirsty Hippo" product into it.
It absorbs moisture too, just remember to change it when it's "full"