I wouldn't take the risk to order acrylic racks from across an ocean (they can break easily), let alone factoring in the Customs costs.
So, I tend to buy generic racks locally, which are OK for CPCs but too large for Paulsons or Tina chips.
The solution is the following (I don't even know how to call these things in my own mother tongue, let alone in English):
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One side is felt, the other side is sticky. You put these things under the legs of chairs and tables. They do a great job in larger-than-necessary chip racks too.