How much would it cost to put all of sci-hub on IPFS?

How much would it cost to put all of sci-hub on IPFS? I'm given to understand that once a file is uploaded to IPFS nobody (exept the uploader himself) can take the file off of IPFS. Also I've come to understand that uploading costs some money but downloading is free. See where this is going? What is someone would download all the PDF files in this repository and upload them to IPFS? http://gen.lib.rus.ec/scimag/repository_torrent/ You could ask "why?" since these files are allready hard to take offline (they are served through BitTorrent after all). Well, when downloading through IPFS you don't need a BitTorrent client and also it's now a whole lot easeyer to index and search through these files. This brings me to another question? Has someone allreadt build a search engine (extension) for IPFS sites and files?