$89.99 – RD6018 or RD6018W.
RIDEN RD6018 RD6018W USB WiFi DC to DC Power Supply is for $89.99 (in Banggood). Check coupons or create price alert down below. Let’s see what best price is ATM.
Latest coupon code price check (UTC time):
Banggood ($89.99)
Banggood warehouse is located in China. There is no active coupon in my database right now (for Banggood). The question is – is it a good price? This price is higher than average price ($62.49) for this item.
Link: Banggood product page
Price: $89.99
Additional Banggood coupons: first page and second page
Old coupons (from the oldest to the newest): BG6918W, BG6018, BG6318W, BGRUMB15, BG73RD18, BG67RD, BGSTUDENT10, BGCuponation10, BG0646, BG16RD18, BG6018RD, 7bcdf9, BGab95d4, BGVNRD01, BGbabe19, 13f142, BGab91d4, BG7894ce, BG00c906, Terence, BG1efeb0, BGPL18MAJA0, 8wEbgaInS5, BGPL19MAJA0, pROMo8cuPoN, hoNEYbGdeAlS, BGJUNEGSG9, BG2c7a74, BGc52e1d, 9OFFSUMMER, Cuponation9, BGCOUPERT8, BGCAPITALOS8, BGESJY8, BGALL8
(these codes were not working in latest coupon update, but you can check them out anyway)
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.
Price history and price alert
Check out price history chart (for all/most countries) for RIDEN RD6018 RD6018W USB WiFi DC to DC Power Supply. The lowest price was: $59.99.
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)).