@elevick have you tried Mapleshade’s complete vibration control system with the wooden platform and the brass footers along with the cork/rubber blocks? I am not suggesting that the blocks alone are adequate. Not that a VPI table really needs more mass, but the wood platform adds significant mass in between the blocks and turntable feet/brass footers that helps reduce vibration coming from both the table and from the floor/room. It is also both less expensive and less elegant than the Townshend platform, which is within the OP’s budget. But some folks may like the quaint funkiness of the Mapleshade design.
kn