Agree the ADA products are relatively expensive. However, many "仿" products we see in the market are originally designed by ADA. R&D needs a lot of money to maintain. And some products with good design really save you money in a long run. Good for you to get the NA Thermometer, it is great. I got a small CO2 diffuser at 4XX... last couple weeks, 肉赤 but really good looking

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i got the 15mm thermometer too. its abit expensive but still okay. but, the ada big bubble counter for 8xx and in/out flow for another 8xx each is at sky price.

I would rather to use the fake.