$800 dollars for a banana pi that is a total scam. Here's a link to aliexpress 28 euros new bpi m1. The M1 plus and some orange pi's are supported by Slackware, as well as AARCH64 on the rockpro64. I'll never buy from India, so thanks for that tip. 
https://www.aliexpress.com/store/1100417230/pages/all-items.html?productGroupId=40000003426518&amp;storeId=1100417230&amp;sortType=bestmatch_sort&amp;shop_sortType=bestmatch_sort