650 PLN - Xiaomi Mi TV 4A
It's not easy to get a TV that will display colors somewhat accurately at this price. It's even harder to get a TV with hardware that won't freeze while navigating the menu.
ThisTV can display decent image quality (thanks to VA panel that's way better than any TN or BUDGET IPS). And it's got a quad-core Cortex A53 CPU (that's the same as for example Snapdragon 425 found in last-year's ~800 PLN smartphones from EU distribution such as Samsung Galaxy J6+ or Asus Zenfone 4 Max).
Even at it's base price of 780 PLN is really good value for money. When discounted - it's even better.
https://www.amazon.de/Xiaomi-Android-Fernbedienung-Mikrofon-Netflix/dp/B07X35S11S?language=pl_PL&tag=pepperpl09-21
1350 PLN Xiaomi Mi 9t Pro 128 GB
Gearbest.pl offers 2-year warranty in EU, Shipping method EU Priority Lane provides tax-free shipping and the phone itself is a great value for money.
This deal is all about getting 128 GB model for the price of 64 GB model.
https://www.kimovil.com/to/special/YF3Ahm?fbclid=IwAR1u5As4042jNtk2dUBui7Y0_6PY--R5RCvApnNxEYdv45KchekCS9T2GZ0
150 PLN - Netac 720 GB SATA III 2.5 inch SSD
The quality is decent (not necessarily for critical business data, but good enough for home use). And the price is unbeatable. Can be used in current-generation consoles as well. Make sure to use coupon and pay with MasterCard.
Coupon code: BFBUY7
https://www.pepper.pl/promocje/znizka-535-przy-platnosci-mastercard-na-aliexpress-210184?fbclid=IwAR2buYnR9H8E7n8HtzZrlq73xgryIokwYy81DsIxUqPlFK3yTfJU6JnaWj8
https://www.aliexpress.com/item/32982346173.html?scm=1007.23534.124000.0&pvid=57e98e70-99ca-459f-80d6-097b62da0721&rmsg=do_not_replacement&aff_platform=promotion&cpt=1575308329913&sk=nHz3rGy0&aff_trace_key=7a7cd5dd6351440f888ca5de64f5fec1-1575308329913-01229-nHz3rGy0&terminal_id=728b21c17e2f44b480372e78a695ab2f
Coupons for anything on eBay. Just a few percent discount, but you can buy absolutely anything (minimum spend 150 EUR)
https://www.mydealz.de/gutscheine/ebay-gutschein-fur-den-cybermonday-10-ab-150-20-ab-250-50-ab-550-1485728?fbclid=IwAR3eFQ_IsZNyiMPbYCidAkplgUXwUAv0c8ej_insZ38_PmgA8c5lP8PWVts