@plastic, while not wanting to come off as contrary, the Machina Dynamica springs are only $50/4 (they can of course be placed under a bamboo board), the Townshend Pods around $300/4. The Pods come in a variety of load weight ratings, all about the same price for two sets as are the GAIA 2 ($600/8), and half the price of the GAIA 1 ($1200/8).
If you look at the cut-away diagram of the GAIA on the IsoAcoustics website, you will see the outer metal housing of the footer, the layer of proprietary rubber on the bottom of the structure, and the structure's interior. I still use a set of SIMS Navcom Silencers (Navcom is best rubber compound for isolation of which I am aware) on my VPI HW-19 table, but they are no Townshend Seismic Pod. The cheaper IsoAcoustics feet, which many (including Art Dudley---see below) have found to be less effective at isolation that the GAIA, are all rubber.
$50 for a set of four Machina Dynamica Mini Isolator Springs is imo a gamble well worth making. I predict you will find they provide isolation superior to any of the IsoAcoustic footers. Of course, not all people really want isolation, but instead "tuning".
In his Stereophile review of the various IsoAcoutics feet, Art Dudley preferred the GAIA to the others under his Garrard 301. AD has apparently never been approached by the U.S. distributor of Townshend Audio, even after his review of the IsoAcoustics. If I were Max, I’d be looking for a better U.S.A. distributor!