It depends how much you think your time is worth... a lot of ebooks can be had for like 5 bucks ....scanning even a short book can take a long time and then there is the whole ocr thing... I only did it once for a text book that was out of print.... never again.. I ended up scanning the thing into image format as a pdf... ended up as a 100mb monster and it took me the whole day and then some... do a google for the books you want you may be surprised at what you can fund
