I'm sure there will be suppliers closer to home for you.
Although I'm sure they're Chinese, the likes of Holley will sell a range of sensors....although their pricing would be a tad higher than the Chinese versions
I know some people do use Chinese sensors with success.....I guess as long as it wasnt used for any controlling functions it might be ok.
For less than $12 incl postage ? How do they do it ??? lol