You can create price alert here, copy coupons and view price history. What is the best price?
Aliexpress
There’re some similar (or not) items on Aliexpress
Click here to search by yourself. Here are coupons that you can use.
Latest coupon and price update (UTC):
53 water spouts, 120mm large cover
Banggood
Banggood warehouse is located in China. There is one coupon right now! Check this out.
Link: Banggood product page
1. ($26.10): 13f142
this code has to be applied in your cart after clicking “Proceed to checkout”. Click to copy code and open shop.
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/5cd
Old coupons (from the oldest to the newest): e2bcea, bd3718, 502C6B, vipupgrade8, TTxBG10, aff7off, BGkonimbesinDiiib, 2019SPEDM, BGss8%hl, bgssaff9, AFfbG10, BGBFAFF2019, BGCITYADS2019, BGBGHFRI15, BGDIBI24, BGVDay10%off, 0e7f33, BGHOMEG12, FBCOUPON1, BGMPB2020, BGTT10, bGhOnEy10, BGdragonBoat, BGSS10%SW, bgshOOp10, BGHome15%, BGHALLOWEEN, BGHOMEA15%, BGZAXA38, BgcLuBofErtA10, BGAFF10OFF, BGCuponation10, BGHONEY2110, BG10OFFAFF, BGwhielabel, BG10OFFAFF1, BANGGOODSD, 00c906
(I don’t think these’re gonna work, but you can try ’em out anyway)
Other warehouses/versions
This item is available in 1 another warehouse/version!
1. China – Xiaomi Youpin Diiib Shower Head Hose Set ($-3)
Price history and price alert
Do you need price history chart (for all/most countries) for Xiaomi Youpin Diiib Shower Head? There we go.
Price records source(s): Gearbest, Banggood
Click on image to enlarge. 
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)).