Hey, http://www.dealextreme.com/details.dx/sku.11743 That site also has alot of other cool things for cheap. But i have that thing and it works great to see the Trichomes.
I've got one simillar, goes up to 200 mag... ya, it's cool, but to get to the higher magnification, you really need to have the bud imobilized.... ANY movement, no matter how small, and you just can't focus.... when I do use it, it's mostly at it's lowest power, due to the vibration thing... I use a standard loop most of the time. The microscope I use after the harvest, when I don't have to worry about the plant moving around... more of a novelty thing...