$27.89 – Radiomaster ER6 2.4GHz 6CH ExpressLRS ELRS RX 100mW PWM Receiver Support Voltage Telemetry for FPV RC Drone Airplane Glider.
When I was updating this page, then coupon price was $27.89 for Radiomaster ER6 2.4GHz 6CH ExpressLRS ELRS RX 100mW PWM FPV Receiver (in Banggood). Just check coupons out (with price alert and history). Best price?
Latest price update (UTC time):
Banggood ($27.89)
Banggood warehouse is located in China. Coupons for Radiomaster ER6 2.4GHz 6CH ExpressLRS ELRS RX 100mW PWM FPV Receiver? Nope, there’re no coupons in Banggood. Is it expensive? Looks like a good price to me (average is $28.48).
Link: Banggood product page
Price: $27.89
Additional Banggood coupons: first page and second page
Old coupons (from the oldest to the newest): BG589b2e
(these coupons are old, so probably won’t work)
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
Here is price history (for all/most countries) for Radiomaster ER6 2.4GHz 6CH ExpressLRS ELRS RX 100mW PWM FPV Receiver. The lowest price was: $25.99.
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)).