I have two 24 x 16 bass drums. I've seen as small as 18" diameter by 14" (I think) which, I agree, I would much prefer in terms of overall kit height.
This is the higher end tom mount that I have on both of my BD's:
Its at $75, a little high, but that is because it comes with the matching piece that it sits in on the bass. You can probably pick one up for around $50.
This is the one that matches the tom holder stand...currently at $29.95:
For me personally, I would hold out for or go for the higher end mount...but, that is my preference! :)
Hope this helps.