I have just checked coupons. The lowest price I could get is $99.99 for Raspberry Pi 4 Model B 8GB (in Banggood). Basically copy coupon, view price history or create e-mail price alert. What is best price?
Raspberry Pi 4 Model B 1/2/4/8GB RAM Cortex-A72 ARM v8 64-bit SoC 1.5GHz Gigabit Ethernet WiFi BLE 4K Video RPi 4B Pi4 Development Board – 8GB RAM
Latest coupon code price check (UTC time):
Banggood ($99.99)
Banggood warehouse is located in China. Hmmm… There is no active coupon in Banggood at this moment. What about the price? Hmmm, price is higher than average (which is $98.29 right now), so better set price alert down below…
Link: Banggood product page
Price: $99.99
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/5cd
Old coupons (from the oldest to the newest): AFfbG10, BGrp25568, BGVDay10%off, BGpage7470, 3dbadf, BGAFF10OFF, BGMPB2020, bGhOnEy10, BGdragonBoat, BGSS10%SW, bgshOOp10, BgoFErTaSchInA10, BGELIG0920, BGHALLOWEEN, BgcLuBofErtA10, BGRUMB15, BGCuponation10, BGd0b05d, 13f142, BGHONEY2110, 7bcdf9, BG589b2e, BGCAPITALOS8, BG07886a, BG2757ea, BG8FORMULAMX, BGBFDAY8, BGHONEYSP, BGESJY8
(there’s a little possibility that old coupon will work)
Other warehouses/versions
This item is available in 3 another warehouse/versions!
1. China – Raspberry Pi 4 Model B 1GB ($75.99)
2. China – Raspberry Pi 4 Model B 2GB ($69.99)
3. China – Raspberry Pi 4 Model B 4GB ($79.99)
Aliexpress
There’re some similar (or not) items on Aliexpress
Click here to search by yourself. Here are coupons that you can use.
Price history and price alert
Do you need price history chart (for all/most countries) for Raspberry Pi 4 Model B 8GB? There we go.
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)).