$499.99 – DHO814 Digital Oscilloscope 100MHz 12-bit High Resolution 1.25 GSa/s Real Time Sampling 4 Channel Kit Advanced Signal Processing UltraHD Touch Screen User-friendly Practical Lab Equipment.
Right now the best price with coupon code for DHO814 Digital Oscilloscope 100MHz 12-bit 1.25 GSa/s is $499.99 (in Banggood). You can create price alert here, copy coupons and view price history. Best price?
Latest coupon and price update (UTC):
Banggood ($499.99)
Banggood warehouse is located in China. I don’t think there is an active coupon right now – at least in my database. Is it good price? From what I can see this price is higher than average price ($490.55).
Link: Banggood product page
Price: $499.99
Additional Banggood coupons: first page and second page
Old coupons (from the oldest to the newest): BGNEWYEAR8, BG47686e, BGSPRING8OFF, BG6ce487, BGALL8, BGMAI666, BG599513
(sometimes old coupons work, so you can check them out (this site checks them on every price update))
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
Price history (for all/most countries) for DHO814 Digital Oscilloscope 100MHz 12-bit 1.25 GSa/s is here. The lowest price was: $479.99.
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)).