How about a little head?

http://www.ebay.com/itm/Tektronix-S-...item1e722f36fa

I've recently seen this model priced for almost double the asking price of the auction above.

Let's get back to reality:

Last week I bought an S-1 (1GHz), S-6 and an S-53 (trigger recognizer) head plus a 7S11 sampling plugin for roughly half the price of the S-6 in the linked auction. All save the 7S11 were recently certified in-spec, and I can repair the plugin if need be.