1. The site you mention is partially free. Without the subscription it gives you a reduced version. Basically, the reduction consists in giving you only 3 first items
on any search you try to make. If you state your search parameters smartly, you can extract a lot of information using this reduced version. It also gives you author's profiles.

2. Those reviews that they have in TeX are available in pdf. Those which were written
before the spread of TeX are simply scanned. Your complain that they are poorly legible seems strange: how would you imagine old printed texts are converted to electronic formats? Only by scanning. Or do you think someone will hire great armies
of qualified people to put them in TeX, and then distribute them for free? 

Edit. Now the full version is free.