The Major - Anyone know where I can buy this figure?

[tnjrp]

The only thing really holding me back is not being able to find a 28mm scale Tachicoma....anyone know where I can find one?

I have a Tachikoma Gashaphon set from a few years back that was in the right ballpark. That's probably long OOP (and I'm not going to sell any) but you might try eBay.

[dijit]

The only thing really holding me back is not being able to find a 28mm scale Tachicoma....anyone know where I can find one?

You could try building one:
http://leadadventureforum.com/index.php?topic=32335.0

[mrgrigson]

I have this set, and they're excellent. This example is way overpriced (I think I paid $40 including shipping for mine), but it's a great collection to look for.