Despite the fact that there is the mining boom going on and getting a new gpu is a total fiasco, I managed to get my hands into two AMD RX 5700 series cards. The RX 5700 cost 275 EUR, while the RX 5700XT was 389 EUR. These cards were returned to the store for some reason, yet unknown. Both of the cards got full warranty so I think this is not about standing on thin ice. During the time of purchase, these cards could be sold in the 2nd hand market for almost 500 EUR profit.
I wanted to get some base benchmark lines for these GPUs before tweaking any settings. Both of the cards were ran by their own default settings.
I did try the 5700XT for mining. 1800 memory clock and 1300 core clock with custom fan curve could make aprroximately 8,5 EUR / 24h with Nicehash.