According to my DB the lowest price is 21.99 USD for SONOFF ZB Bridge Smart Bridge Zigbee3.0 Remote Controller (in Banggood). Basically copy coupon, view price history or create e-mail price alert. You probably want to know what is the best price?
Latest coupon and price update (UTC):
Banggood (21.99 USD)
Banggood warehouse is located in China. There is no active coupon in my database right now (for Banggood). Is it a reasonable price for this item? Hmmm, price is higher than average (which is 12.05 USD right now), so better set price alert down below…
Link: Banggood product page
Price: 21.99 USD
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k
Old coupons (from the oldest to the newest): BGSONOFF15, BGSONOFFZBB, BGSNZBBZ, BGESSONOFF1, 13f142, BGVKSOZB, BgcLuBofErtA10, BGHU0147, BGZB13, BGSNZBBR, BGSONOFF16, BGAFF10OFF, BGSTHO15, BGSON149, BGHONEY2110, BGSHOM15, BGSHE15, BG93de6d, 6GSGIT, BGSmart6, BGHU1717, 8BGwbg2204, 8wEbgaInS5, pROMo8cuPoN, BGJUNEGSG9, BG15Sonoff, BG8ReviTrage, Cuponation9, 9OFFSUMMER, BGd187f7, BG2f6dea, BGf6926e, BGb02ae3
(system checks these coupons on every price check (like once per 24 hours), but you can check them out anyway)
Aliexpress
Click here… to search for SONOFF ZB Bridge Smart Bridge Zigbee3.0 Remote Controller on Aliexpress
Here are coupons that you can use.
Price history and price alert
Do you need price history chart (for all/most countries) for SONOFF ZB Bridge Smart Bridge Zigbee3.0 Remote Controller? There we go.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).