Cheap tricks.

I've been riding fixed for about a year and have recently been trying a few basic tricks. I want to get a cheap trick build but wondered whether it'd be better to try and build something up cheap or to buy a used charge plug, mongoose maurice, charge scissor ect. Basically I just want something i can bash around without worrying too much, doesn't hav to be amazingly strong as I won't be jumping stair sets or anything and probably won't fit anything wider than a pair of 28C.

Also if i go for the build option if you could give me links to cheap stuff that would work well or things i should be looking out for 2nd hand.

some stuff going on this forum: http://www.lfgss.com/thread63701.html

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More info here: http://www.londonnocturne.com/fixedskid.php

That bike is a bargin but i wasn't advice more than anything and I think 700C's a must, I want something more like a road/track bike that can take abuse rather than an oversized BMX.