This is actually insanely expensive. 1mb is 1000 kb, so that would be multiplied by 5000, so would be 0.5 btc, about 150 US dollars, to store one file...
any whim for your money

And how would this work anyways, you can't "download" txs or something like that, theres no file storage availability in bitcoin, maybe to store small text or something than yea but how would you store a file like an image or video??