Seriously, the MS Explorer Trackball costs $55. Why does a happ trackball cost $160? Is it really three times better?
which happs trackball is 160? see the other post re: its sale price...
Happs can charge whatever the market will bear and often does =P There are cheaper alternatives and a little bargain hunting goes a long way in this hobby (along with patience and lots of tools)
Is the MS explorer a 3" diameter ball? Is it made to take the abuse of drunken public slamming? Are the parts standard so if your trackball rollers wear down you can get replacement parts without buying a whole new tball? I don't think the MS tball is comparable at all (but i'd never pay 160 duckets for a trackball, arcade or otherwise... in fact i paid 30 beans for my refurbished 3" arcade tball) I also doubt the MS explorer wizzzzes like an arcade tball (not a prerequisite necessarily but it is the only metric I have)
*shrug* hope that explains it... good luck!
rampy