I was actually just looking at the retailer sites. There's one (I forget which) that has the box for sale for $119.99 BUT it comes with a bonus 2piece space case grinder. Put dry bud in there and it'll grind it surprisingly decent, as long as you put enough in it. I only mention it because Space Case grinders cost at LEAST $25 at the local headshops... So thatgs a good deal, and if not sell it to a friend for $15 and buy a coffee grinder.
The best tips I can give you are:
Fine grind. Finer than packing a bowl/joint. The finer the better, my coffee grinder can get it down to the consistency of table salt. Finer grind means more surface area and it will vaporize more evenly as well as vape faster/provide more vapor faster.
Dry material. I usually grind all my medical at once and let it sit on a piece of paper for some hours or so. When it's dry there is tless water moisture to vaporize as well, so the vapor has a higher ratio of cannabinoids to vapor compared to fresh/moist bud that will also have more water svapor.
Have fun! It takes a trench or three to get the hang of it, but once you do, you'll love it. I hit mine anywhere I need to with confidence. Smaller hits that I can fully absorb, no vapor, small enough to palm and slip into a pocket. Save the "abv"and make edibles. Depending on how well you vaporize it, it can be surprisingly strong. I've had some stuff that ~1g of flower/bubble mixed with peanut butter got me too high! And depending on how well it's vaped, it might come out almost entirely CBD/indica as hell. Sedating, hypnotic, perfect for pain and sleep.
Good luck!