Voltage 12 V / 50Hz, Power Supply USB Charging, Size 130x 65 mm, Weight 280g, Power 5W, Battery Capacity 1200mA, Pipe Length 55 cm, Color Black + White, Model ML-WP2, Charging Time 3 Hours, Material 304 Stainless Steel + PP.
Basically copy coupon, view price history or create e-mail price alert. Let’s see what best price is ATM.
Aliexpress
There’re some similar (or not) items on Aliexpress
You can use link bot to get even lower price:
Click here to search by yourself. Here are coupons that you can use.
Latest coupon code price check (UTC time):
Banggood
Banggood warehouse is located in China. We have found one coupon for this product!
Link: Banggood product page
1. ($12.89): BANGGOODSD
apply it in your cart after clicking “Proceed to checkout”. Click to copy code and open shop.
Additional Banggood coupons: first page and second page
Old coupons (from the oldest to the newest): BG699CPO, TTxBG10, bgssaff9, AFfbG10, BGBFAFF2019, BGCITYADS2019, BG19PMRA, BGminleaf, BG322e14, BGMPB2020, BGAFF10OFF, bGhOnEy10, BG3Q5, BGHome15%, BGminf15, BGHOMEA15%, BgcLuBofErtA10, BGCuponation10, 13f142, BGHONEY2110, BG10OFFAFF, BGwhielabel, BG10OFFAFF1
(sometimes old coupons work, so you can check them out (this site checks them on every price update))
Price history and price alert
Price history (for all/most countries) for Minleaf ML-WP2 Electric Water Pump is here. The lowest price was: $6.88.
Price records source(s): 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)).