You may write a VBA script to read apis of the exchanges to fetch from exchanges. That will automate the process of excel spreadsheet. Excel spreadsheet with scripts is quite a handy tool than those websites. Though websites are awesome.
can you explain little bit more about this trick, or maybe do you have link of the tuttorial or something?
i have problem with updating price altcoin, i have to check all those coin one by one and it took many time, bitcoinwisdom is limited, but if only for overview holdings, so far i'm not complaining,