Just check coupons out (with price alert and history). You probably want to know what is the best price?
Aliexpress
There’re some similar (or not) items on Aliexpress
Click here to search by yourself. Here are coupons that you can use.
Latest price update (UTC time):
Waveform Interpolation (sinx)/x, R’ecord Length 40’K, GND, Inputs Coupling AC, Sample Rate Range 500MS/s–1GS/s, Inpits Impendance 1MΩ±2% II20pF±3pF, DC
Banggood
Banggood warehouse is located in Europe 
. Sorry, but there’s no price history in my database. We have found one coupon for this product!
Link: Banggood product page
1. ($252.89): BGGines
paste coupon code in your cart and click Apply after clicking “Proceed to checkout”. Click to copy code and open shop.
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/5cd
Old coupons (from the oldest to the newest): BG5102P, 2020CNY, AFfbG10, BGVDay10%off, BGAFF10OFF, bGhOnEy10, 4000c3, 7d18f7, BGSS10%SW, BGDSO5102P, bgshOOp10, BGherra, BG11PP12, BG308652AU, BG08652CZ, BGCNNY07, BGCuponation10, 13f142, BG478713, BG095102P, BGDCTOOLS, BG12LIPCA4
(these coupons are old, so probably won’t work)
Other warehouses/versions
This item is available in 1 another warehouse/version!
1. China – Hantek DSO5102P Digital Storage Oscilloscope ($-3)
Price history and price alert
We don’t have enough records in database to show price history for this item. BTW: We have only recorded this price: $218.99.
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)).