After 2 days of testing : Router is good for that money. But for 50-70Eur inside you wont get GOOD LTE modem & antenna . Good LTE modems from (Sierra or Quectel, both allow band lock) costs 50-140 Eurs..The modem i got inside is qualcomm which doesnt allow me band lock .. with default antennas & modem it very hard finds LTE signal. iPhone6S or Samsung A3 from 2017 have better antennas and get better LTE speeds(sometimes 50% better speed) than default antennas & modem . So if you want good speeds invest extra money for good external antenna & good modem like Sierra or Quectel ... WE826 is customizable so on google you can find all modification stuff from custom firmwares, upgrading modems, band lock etc..
I saw on amazon that KuWFi is also selling WE826 with Quectel EC25 modem . Price is at least 2x + so expect 100 Eur (good modems not cheap =) ) ... On youtube i found video of gy who has WE826 + Quectel EC25 same firware than me and he can do BAND LOCK.. I cannot band lock with cheap Qualcomm modem. So decide by yourself .. more money-> better modem -> better features -> better speeds =) of course contact KuWFi before you buy =)