Just check coupons out (with price alert and history). Best price?
AMP RATING: 15 A, Dimensions: 8x 5x 13.8 cm/3.15x 2.0x 5.4 inch(Lx Wx H), Pressure: 7.25-125 PSI, Thread: 1/4 inch / 1/8 inch NPT, Maximum Voltage: 240 V(AC)
Aliexpress
I could not find it on Aliexpress. Click here to search by yourself.
Here are coupons that you can use.
Latest price update (UTC time):
Banggood
Banggood warehouse is located in Europe 
. I’m not sure about the price, coz I have only 1 record(s) in my database.
Link: Banggood product page
1. ($20.23): BGSCM11
2. ($21.61): BG589b2e
coupon code has to be applied in shop’s cart after clicking “Proceed to checkout”. Click to copy code and open shop.
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/5cd
Old coupons (from the oldest to the newest): BGSCM75
(I don’t think these’re gonna work, but you can try ’em out anyway)
Other warehouses/versions
This item is available in 1 another warehouse/version!
1. China – 7.25-125PSI Air Compressor Pressure Switch Air Valve ($-3)
Price history and price alert
Well, you won’t see price history chart, coz we have only 1 database record for this item (and price was $17.59).
You can set price alert (for Banggood and Aliexpress (only if product name will be the same as on Banggood and I will post it on social media though, so it’s more like Banggood price alert)).